1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1982-2009 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * David Korn <dgk@research.att.com> * 18 * * 19 ***********************************************************************/ 20 #pragma prototyped 21 22 #include <shell.h> 23 #include <signal.h> 24 #include "defs.h" 25 #include "shtable.h" 26 #include "ulimit.h" 27 #include "name.h" 28 #include "version.h" 29 #if KSHELL 30 # include "builtins.h" 31 # include "jobs.h" 32 # include "FEATURE/cmds" 33 # define bltin(x) (b_##x) 34 /* The following is for builtins that do not accept -- options */ 35 # define Bltin(x) (B_##x) 36 #else 37 # define bltin(x) 0 38 #endif 39 40 #if defined(SHOPT_CMDLIB_DIR) && !defined(SHOPT_CMDLIB_HDR) 41 # define SHOPT_CMDLIB_HDR <cmdlist.h> 42 #endif 43 #define Q(f) #f /* libpp cpp workaround -- fixed 2005-04-11 */ 44 #define CMDLIST(f) SH_CMDLIB_DIR "/" Q(f), NV_BLTIN|NV_BLTINOPT|NV_NOFREE, bltin(f), 45 46 #undef basename 47 #undef dirname 48 49 /* 50 * The order up through "[" is significant 51 */ 52 const struct shtable3 shtab_builtins[] = 53 { 54 "login", NV_BLTIN|BLT_ENV|BLT_SPC, Bltin(login), 55 "exec", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(exec), 56 "set", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(set), 57 ":", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(true), 58 "true", NV_BLTIN|BLT_ENV, bltin(true), 59 "command", NV_BLTIN|BLT_ENV|BLT_EXIT, bltin(command), 60 "cd", NV_BLTIN|BLT_ENV, bltin(cd), 61 "break", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(break), 62 "continue", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(break), 63 "typeset", NV_BLTIN|BLT_ENV|BLT_SPC|BLT_DCL,bltin(typeset), 64 "test", NV_BLTIN|BLT_ENV, bltin(test), 65 "[", NV_BLTIN|BLT_ENV, bltin(test), 66 "let", NV_BLTIN|BLT_ENV, bltin(let), 67 "export", NV_BLTIN|BLT_ENV|BLT_SPC|BLT_DCL,bltin(readonly), 68 ".", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(dot_cmd), 69 "return", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(return), 70 #if SHOPT_BASH 71 "local", NV_BLTIN|BLT_ENV|BLT_SPC|BLT_DCL,bltin(typeset), 72 #endif 73 #if _bin_newgrp || _usr_bin_newgrp 74 "newgrp", NV_BLTIN|BLT_ENV|BLT_SPC, Bltin(login), 75 #endif /* _bin_newgrp || _usr_bin_newgrp */ 76 "alias", NV_BLTIN|BLT_SPC|BLT_DCL, bltin(alias), 77 "hash", NV_BLTIN|BLT_SPC|BLT_DCL, bltin(alias), 78 "enum", NV_BLTIN|BLT_ENV|BLT_SPC|BLT_DCL,bltin(enum), 79 "eval", NV_BLTIN|BLT_ENV|BLT_SPC|BLT_EXIT,bltin(eval), 80 "exit", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(return), 81 "fc", NV_BLTIN|BLT_ENV|BLT_EXIT, bltin(hist), 82 "hist", NV_BLTIN|BLT_ENV|BLT_EXIT, bltin(hist), 83 "readonly", NV_BLTIN|BLT_ENV|BLT_SPC|BLT_DCL,bltin(readonly), 84 "shift", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(shift), 85 "trap", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(trap), 86 "unalias", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(unalias), 87 "unset", NV_BLTIN|BLT_ENV|BLT_SPC, bltin(unset), 88 "builtin", NV_BLTIN, bltin(builtin), 89 #if SHOPT_ECHOPRINT 90 "echo", NV_BLTIN|BLT_ENV, bltin(print), 91 #else 92 "echo", NV_BLTIN|BLT_ENV, Bltin(echo), 93 #endif /* SHOPT_ECHOPRINT */ 94 #ifdef JOBS 95 # ifdef SIGTSTP 96 "bg", NV_BLTIN|BLT_ENV, bltin(bg), 97 "fg", NV_BLTIN|BLT_ENV|BLT_EXIT, bltin(bg), 98 "disown", NV_BLTIN|BLT_ENV, bltin(bg), 99 "kill", NV_BLTIN|BLT_ENV, bltin(kill), 100 # else 101 "/bin/kill", NV_BLTIN|BLT_ENV, bltin(kill), 102 # endif /* SIGTSTP */ 103 "jobs", NV_BLTIN|BLT_ENV, bltin(jobs), 104 #endif /* JOBS */ 105 "false", NV_BLTIN|BLT_ENV, bltin(false), 106 "getopts", NV_BLTIN|BLT_ENV, bltin(getopts), 107 "print", NV_BLTIN|BLT_ENV, bltin(print), 108 "printf", NV_BLTIN|BLT_ENV, bltin(printf), 109 "pwd", NV_BLTIN, bltin(pwd), 110 "read", NV_BLTIN|BLT_ENV, bltin(read), 111 "sleep", NV_BLTIN, bltin(sleep), 112 "alarm", NV_BLTIN, bltin(alarm), 113 "ulimit", NV_BLTIN|BLT_ENV, bltin(ulimit), 114 "umask", NV_BLTIN|BLT_ENV, bltin(umask), 115 #ifdef _cmd_universe 116 "universe", NV_BLTIN|BLT_ENV, bltin(universe), 117 #endif /* _cmd_universe */ 118 #if SHOPT_FS_3D 119 "vpath", NV_BLTIN|BLT_ENV, bltin(vpath), 120 "vmap", NV_BLTIN|BLT_ENV, bltin(vpath), 121 #endif /* SHOPT_FS_3D */ 122 "wait", NV_BLTIN|BLT_ENV|BLT_EXIT, bltin(wait), 123 "type", NV_BLTIN|BLT_ENV, bltin(whence), 124 "whence", NV_BLTIN|BLT_ENV, bltin(whence), 125 #ifdef SHOPT_CMDLIB_HDR 126 #include SHOPT_CMDLIB_HDR 127 #else 128 CMDLIST(basename) 129 CMDLIST(chmod) 130 CMDLIST(dirname) 131 CMDLIST(getconf) 132 CMDLIST(head) 133 CMDLIST(mkdir) 134 CMDLIST(logname) 135 CMDLIST(cat) 136 CMDLIST(cmp) 137 CMDLIST(cut) 138 CMDLIST(uname) 139 CMDLIST(wc) 140 CMDLIST(sync) 141 #endif 142 #if SHOPT_REGRESS 143 "__regress__", NV_BLTIN|BLT_ENV, bltin(__regress__), 144 #endif 145 "", 0, 0 146 }; 147 148 149 const char sh_set[] = 150 "[a?Set the export attribute for each variable whose name does not " 151 "contain a \b.\b that you assign a value in the current shell " 152 "environment.]" 153 "[b?The shell writes a message to standard error as soon it detects that " 154 "a background job completes rather than waiting until the next prompt.]" 155 "[e?A simple command that has an non-zero exit status will cause the shell " 156 "to exit unless the simple command is:]{" 157 "[++?contained in an \b&&\b or \b||\b list.]" 158 "[++?the command immediately following \bif\b, \bwhile\b, or \buntil\b.]" 159 "[++?contained in the pipeline following \b!\b.]" 160 "}" 161 "[f?Pathname expansion is disabled.]" 162 "[h?Obsolete. Causes each command whose name has the syntax of an " 163 "alias to become a tracked alias when it is first encountered.]" 164 "[k?This is obsolete. All arguments of the form \aname\a\b=\b\avalue\a " 165 "are removed and placed in the variable assignment list for " 166 "the command. Ordinarily, variable assignments must precede " 167 "command arguments.]" 168 "[m?When enabled, the shell runs background jobs in a separate process " 169 "group and displays a line upon completion. This mode is enabled " 170 "by default for interactive shells on systems that support job " 171 "control.]" 172 "[n?The shell reads commands and checks for syntax errors, but does " 173 "not execute the command. Usually specified on command invocation.]" 174 "[o]:?[option?If \aoption\a is not specified, the list of options and " 175 "their current settings will be written to standard output. When " 176 "invoked with a \b+\b the options will be written in a format " 177 "that can be reinput to the shell to restore the settings. " 178 "This option can be repeated to enable/disable multiple options. " 179 "The value of \aoption\a must be one of the following:]{" 180 "[+allexport?Equivalent to \b-a\b.]" 181 "[+bgnice?Runs background jobs at lower priorities.]" 182 "[+braceexpand?Equivalent to \b-B\b.] " 183 "[+emacs?Enables/disables \bemacs\b editing mode.]" 184 "[+errexit?Equivalent to \b-e\b.]" 185 "[+globstar?Equivalent to \b-G\b.]" 186 "[+gmacs?Enables/disables \bgmacs\b editing mode. \bgmacs\b " 187 "editing mode is the same as \bemacs\b editing mode " 188 "except for the handling of \b^T\b.]" 189 #if SHOPT_BASH 190 "[+hashall?Equivalent to \b-h\b and \b-o trackall\b. Available " 191 "in bash compatibility mode only.]" 192 "[+history?Enable command history. Available in bash " 193 "compatibility mode only. On by default in interactive " 194 "shells.]" 195 #endif 196 #if SHOPT_HISTEXPAND 197 "[+histexpand?Equivalent to \b-H\b.]" 198 #endif 199 "[+ignoreeof?Prevents an interactive shell from exiting on " 200 "reading an end-of-file.]" 201 "[+keyword?Equivalent to \b-k\b.]" 202 "[+markdirs?A trailing \b/\b is appended to directories " 203 "resulting from pathname expansion.]" 204 "[+monitor?Equivalent to \b-m\b.]" 205 "[+multiline?Use multiple lines when editing lines that are " 206 "longer than the window width.]" 207 "[+noclobber?Equivalent to \b-C\b.]" 208 "[+noexec?Equivalent to \b-n\b.]" 209 "[+noglob?Equivalent to \b-f\b.]" 210 "[+nolog?This has no effect. It is provided for backward " 211 "compatibility.]" 212 "[+notify?Equivalent to \b-b\b.]" 213 "[+nounset?Equivalent to \b-u\b.]" 214 #if SHOPT_BASH 215 "[+onecmd?Equivalent to \b-t\b. Available in bash compatibility " 216 "mode only.]" 217 "[+physical?Equivalent to \b-P\b. Available in bash " 218 "compatibility mode only.]" 219 "[+posix?Turn on POSIX compatibility. Available in bash " 220 "compatibility mode only. Bash in POSIX mode is not the " 221 "same as ksh.]" 222 #endif 223 "[+pipefail?A pipeline will not complete until all components " 224 "of the pipeline have completed, and the exit status " 225 "of the pipeline will be the value of the last " 226 "command to exit with non-zero exit status, or will " 227 "be zero if all commands return zero exit status.]" 228 "[+privileged?Equivalent to \b-p\b.]" 229 "[+showme?Simple commands preceded by a \b;\b will be traced " 230 "as if \b-x\b were enabled but not executed.]" 231 "[+trackall?Equivalent to \b-h\b.]" 232 "[+verbose?Equivalent to \b-v\b.]" 233 "[+vi?Enables/disables \bvi\b editing mode.]" 234 "[+viraw?Does not use canonical input mode when using \bvi\b " 235 "edit mode.]" 236 "[+xtrace?Equivalent to \b-x\b.]" 237 "}" 238 "[p?Privileged mode. Disabling \b-p\b sets the effective user id to the " 239 "real user id, and the effective group id to the real group id. " 240 "Enabling \b-p\b restores the effective user and group ids to their " 241 "values when the shell was invoked. The \b-p\b option is on " 242 "whenever the real and effective user id is not equal or the " 243 "real and effective group id is not equal. User profiles are " 244 "not processed when \b-p\b is enabled.]" 245 "[r?restricted. Enables restricted shell. This option cannot be unset once " 246 "enabled.]" 247 "[t?Obsolete. The shell reads one command and then exits.]" 248 "[u?If enabled, the shell displays an error message when it tries to expand " 249 "a variable that is unset.]" 250 "[v?Verbose. The shell displays its input onto standard error as it " 251 "reads it.]" 252 "[x?Execution trace. The shell will display each command after all " 253 "expansion and before execution preceded by the expanded value " 254 "of the \bPS4\b parameter.]" 255 #if SHOPT_BASH 256 "\fbash1\f" 257 #endif 258 #if SHOPT_BRACEPAT 259 "[B?Enable {...} group expansion. On by default.]" 260 #endif 261 "[C?Prevents existing regular files from being overwritten using the \b>\b " 262 "redirection operator. The \b>|\b redirection overrides this " 263 "\bnoclobber\b option.]" 264 "[G?Causes \b**\b by itself to also match all sub-directories during pathname " 265 "expansion.]" 266 #if SHOPT_HISTEXPAND 267 "[H?Enable \b!\b-style history expansion similar to \bcsh\b.]" 268 #endif 269 ; 270 271 const char sh_optbreak[] = 272 "[-1c?\n@(#)$Id: break (AT&T Research) 1999-04-07 $\n]" 273 USAGE_LICENSE 274 "[+NAME?break - break out of loop ]" 275 "[+DESCRIPTION?\bbreak\b is a shell special built-in that exits the " 276 "smallest enclosing \bfor\b, \bselect\b, \bwhile\b, or \buntil\b loop, " 277 "or the \an\a-th enclosing loop if \an\a is specified. " 278 "Execution continues at the command following the loop(s).]" 279 "[+?If \an\a is given, it must be a positive integer >= 1. If \an\a " 280 "is larger than the number of enclosing loops, the last enclosing " 281 "loop will be exited.]" 282 "\n" 283 "\n[n]\n" 284 "\n" 285 "[+EXIT STATUS?0]" 286 "[+SEE ALSO?\bcontinue\b(1), \breturn\b(1)]" 287 ; 288 289 const char sh_optcont[] = 290 "[-1c?\n@(#)$Id: continue (AT&T Research) 1999-04-07 $\n]" 291 USAGE_LICENSE 292 "[+NAME?continue - continue execution at top of the loop]" 293 "[+DESCRIPTION?\bcontinue\b is a shell special built-in that continues " 294 "execution at the top of smallest enclosing enclosing \bfor\b, " 295 "\bselect\b, \bwhile\b, or \buntil\b loop, if any; or the top of " 296 "the \an\a-th enclosing loop if \an\a is specified.]" 297 "[+?If \an\a is given, it must be a positive integer >= 1. If \an\a " 298 "is larger than the number of enclosing loops, the last enclosing " 299 " loop will be used.]" 300 301 "\n" 302 "\n[n]\n" 303 "\n" 304 "[+SEE ALSO?\bbreak\b(1)]" 305 ; 306 307 const char sh_optalarm[] = "r [varname seconds]"; 308 const char sh_optalias[] = 309 "[-1c?\n@(#)$Id: alias (AT&T Research) 1999-07-07 $\n]" 310 USAGE_LICENSE 311 "[+NAME?alias - define or display aliases]" 312 "[+DESCRIPTION?\balias\b creates or redefines alias definitions " 313 "or writes the existing alias definitions to standard output. " 314 "An alias definitions provides a string value that will replace " 315 "a command name when the command is read. Alias names can " 316 "contain any printable character which is not special to the shell. " 317 "If an alias value ends in a space or tab, then the word " 318 "following the command name the alias replaces is also checked " 319 "to see whether it is an alias.]" 320 "[+?If no \aname\as are specified then the names and values of all " 321 "aliases are written to standard output. Otherwise, for " 322 "each \aname\a that is specified, and \b=\b\avalue\a is not " 323 "specified, the current value of the alias corresponding to " 324 "\aname\a is written to standard output. If \b=\b\avalue\a is " 325 "specified, the alias \aname\a will be created or redefined.]" 326 "[+?\balias\b is built-in to the shell as a declaration command so that " 327 "field splitting and pathname expansion are not performed on " 328 "the arguments. Tilde expansion occurs on \avalue\a. An alias " 329 "definition only affects scripts read by the current shell " 330 "environment. It does not effect scripts run by this shell.]" 331 "[p?Causes the output to be in the form of alias commands that can be used " 332 "as input to the shell to recreate the current aliases.]" 333 "[t?Used for tracked aliases. These are aliases that connect a " 334 "command name to the pathname of the command and are reset " 335 "when the \bPATH\b variable is unset. The tracked aliases feature is " 336 "now obsolete.]" 337 "[x?Ignored, this option is obsolete.]" 338 "\n" 339 "\n[name[=value]...]\n" 340 "\n" 341 "[+EXIT STATUS?]{" 342 "[+0?Successful completion.]" 343 "[+>0?One or more \aname\a operands did not have an alias " 344 "definition, or an error occurred.]" 345 "}" 346 347 "[+SEE ALSO?\bsh\b(1), \bunalias\b(1)]" 348 ; 349 350 const char sh_optbuiltin[] = 351 "[-1c?\n@(#)$Id: builtin (AT&T Research) 1999-07-10 $\n]" 352 USAGE_LICENSE 353 "[+NAME?builtin - add, delete, or display shell built-ins]" 354 "[+DESCRIPTION?\bbuiltin\b can be used to add, delete, or display " 355 "built-in commands in the current shell environment. A built-in command " 356 "executes in the current shell process and can have side effects in the " 357 "current shell. On most systems, the invocation time for built-in " 358 "commands is one or two orders of magnitude less than commands that " 359 "create a separate process.]" 360 "[+?For each \apathname\a specified, the basename of the pathname " 361 "determines the name of the built-in. For each basename, the shell looks " 362 "for a C level function in the current shell whose name is determined by " 363 "prepending \bb_\b to the built-in name. If \apathname\a contains a " 364 "\b/\b, then the built-in is bound to this pathname. A built-in bound to " 365 "a pathname will only be executed if \apathname\a is the first " 366 "executable found during a path search. Otherwise, built-ins are found " 367 "prior to performing the path search.]" 368 "[+?If no \apathname\a operands are specified, then \bbuiltin\b displays " 369 "the current list of built-ins, or just the special built-ins if \b-s\b " 370 "is specified, on standard output. The full pathname for built-ins that " 371 "are bound to pathnames are displayed.]" 372 "[+?Libraries containing built-ins can be specified with the \b-f\b " 373 "option. If the library contains a function named \blib_init\b(), this " 374 "function will be invoked with argument \b0\b when the library is " 375 "loaded. The \blib_init\b() function can load built-ins by invoking an " 376 "appropriate C level function. In this case there is no restriction on " 377 "the C level function name.]" 378 "[+?The C level function will be invoked with three arguments. The first " 379 "two are the same as \bmain\b() and the third one is a pointer.]" 380 "[+?\bbuiltin\b cannot be invoked from a restricted shell.]" 381 "[d?Deletes each of the specified built-ins. Special built-ins cannot be " 382 "deleted.]" 383 "[f]:[lib?On systems with dynamic linking, \alib\a names a shared " 384 "library to load and search for built-ins. Libraries are search for in " 385 "\b$PATH\b and system dependent library directories. The system " 386 "dependent shared library prefix and/or suffix may be omitted. Once a " 387 "library is loaded, its symbols become available for the current and " 388 "subsequent invocations of \bbuiltin\b. Multiple libraries can be " 389 "specified with separate invocations of \bbuiltin\b. Libraries are " 390 "searched in the reverse order in which they are specified.]" 391 "[s?Display only the special built-ins.]" 392 "\n" 393 "\n[pathname ...]\n" 394 "\n" 395 "[+EXIT STATUS?]{" 396 "[+0?All \apathname\a operands and \b-f\b options processed " 397 "successfully.]" 398 "[+>0?An error occurred.]" 399 "}" 400 "[+SEE ALSO?\bwhence\b(1)]" 401 ; 402 403 const char sh_optcd[] = 404 "[-1c?\n@(#)$Id: cd (AT&T Research) 1999-06-05 $\n]" 405 USAGE_LICENSE 406 "[+NAME?cd - change working directory ]" 407 "[+DESCRIPTION?\bcd\b changes the current working directory of the " 408 "current shell environment.]" 409 "[+?In the first form with one operand, if \adirectory\a begins with " 410 "\b/\b, or if the first component is \b.\b or \b..\b, the " 411 "directory will be changed to this directory. If directory is \b-\b, " 412 "the directory will be changed to the last directory visited. " 413 "Otherwise, if the \bCDPATH\b environment variable is set, \bcd\b " 414 "searches for \adirectory\a relative to each directory named in " 415 "the colon separated list of directories defined by \bCDPATH\b. " 416 "If \bCDPATH\b not set, \bcd\b changes to the directory specified " 417 "by \adirectory\a.]" 418 "[+?In the second form, the first occurrence of the string \aold\a " 419 "contained in the pathname of the present working directory " 420 "is replaced by the string \anew\a and the resulting string " 421 "is used as the directory to which to change.]" 422 "[+?When invoked without operands and when the \bHOME\b environment " 423 "variable is set to a nonempty value, the directory named by " 424 "the \bHOME\b environment variable will be used. If \bHOME\b " 425 "is empty or unset, \bcd\b will fail.]" 426 "[+?When \bcd\b is successful, the \bPWD\b environment variable will be set " 427 "to the name of an absolute pathname that does not contain any " 428 "\b..\b components corresponding to the new directory. The " 429 "environment variable \bOLDPWD\b will be set to the previous " 430 "value of \bPWD\b. If the new directory is found by searching " 431 "the directories named by \bCDPATH\b, or if \adirectory\a is \b-\b, " 432 "or if the two operand form is used, the new value of \bPWD\b will be " 433 "written to standard output.]" 434 "[+?If both \b-L\b and \b-P\b are specified, the last one specified will " 435 "be used. If neither \b-P\b or \b-L\b is specified then the " 436 "behavior will be determined by the \bgetconf\b parameter " 437 "\bPATH_RESOLVE\b. If \bPATH_RESOLVE\b is \bphysical\b, " 438 "then the behavior will be as if \b-P\b were specified. Otherwise, " 439 "the behavior will be as if \b-L\b were specified.]" 440 "[L?Handle each pathname component \b..\b in a logical fashion by moving " 441 "up one level by name in the present working directory.]" 442 "[P?The present working directory is first converted to an absolute pathname " 443 "that does not contain symbolic link components and symbolic name " 444 "components are expanded in the resulting directory name.]" 445 "\n" 446 "\n[directory]\n" 447 "old new\n" 448 "\n" 449 "[+EXIT STATUS?]{" 450 "[+0?Directory successfully changed.]" 451 "[+>0?An error occurred.]" 452 "}" 453 "[+SEE ALSO?\bpwd\b(1), \bgetconf\b(1)]" 454 ; 455 456 const char sh_optcommand[] = 457 "[-1c?\n@(#)$Id: command (AT&T Research) 2003-08-01 $\n]" 458 USAGE_LICENSE 459 "[+NAME?command - execute a simple command]" 460 "[+DESCRIPTION?Without \b-v\b or \b-V\b, \bcommand\b executes \acommand\a " 461 "with arguments given by \aarg\a, suppressing the shell function lookup " 462 "that normally occurs. In addition, if \acommand\a is a special " 463 "built-in command, then the special properties are removed so that " 464 "failures will not cause the script that executes it to terminate.]" 465 "[+?With the \b-v\b or \b-V\b options, \bcommand\b is equivalent to the " 466 "\bwhence\b(1) command.]" 467 "[p?Causes a default path to be searched rather than the one defined by the " 468 "value of \bPATH\b.]" 469 "[v?Equivalent to \bwhence\b \acommand\a [\aarg\a ...]].]" 470 "[x?If \acommand\a fails because there are too many \aarg\as, it will be " 471 "invoked multiple times with a subset of the arguments on each " 472 "invocation. Arguments that occur prior to the first word that expand " 473 "to multiple arguments and arguments that occur after the last word " 474 "that expands to multiple arguments will be passed on each invocation. " 475 "The exit status will be the maximum invocation exit status.]" 476 "[V?Equivalent to \bwhence \b-v\b \acommand\a [\aarg\a ...]].]" 477 "\n" 478 "\n[command [arg ...]]\n" 479 "\n" 480 "[+EXIT STATUS?If \acommand\a is invoked, the exit status of \bcommand\b " 481 "will be that of \acommand\a. Otherwise, it will be one of " 482 "the following:]{" 483 "[+0?\bcommand\b completed successfully.]" 484 "[+>0?\b-v\b or \b-V\b has been specified and an error occurred.]" 485 "[+126?\acommand\a was found but could not be invoked.]" 486 "[+127?\acommand\a could not be found.]" 487 "}" 488 489 "[+SEE ALSO?\bwhence\b(1), \bgetconf\b(1)]" 490 ; 491 492 const char sh_optdot[] = 493 "[-1c?@(#)$Id: \b.\b (AT&T Research) 2000-04-02 $\n]" 494 USAGE_LICENSE 495 "[+NAME?\b.\b - execute commands in the current environment]" 496 "[+DESCRIPTION?\b.\b is a special built-in command that executes commands " 497 "from a function or a file in the current environment.]" 498 "[+?If \aname\a refers to a function defined with the \bfunction\b \aname\a " 499 "syntax, the function executes in the current environment as " 500 "if it had been defined with the \aname\a\b()\b syntax so that " 501 "there is no scoping. Otherwise, commands from the file defined " 502 "by \aname\a are executed in the current environment. Note that " 503 "the complete script is read before it begins to execute so that " 504 "any aliases defined in this script will not take effect until " 505 "the script completes execution.]" 506 "[+?When \aname\a refers to a file, the \bPATH\b variable is searched " 507 "for the file containing commands. In this case execute permission " 508 "is not required for \aname\a.]" 509 "[+?If any \aarg\as are specified, these become the positional parameters " 510 "for the duration of the function or script and are restored " 511 "upon completion.]" 512 "\n" 513 "\n name [arg ...]\n" 514 "\n" 515 "[+EXIT STATUS?If \aname\a is found, then the exit status is that " 516 "of the last command executed. Otherwise, since this is a special " 517 "built-in, an error will cause a non-interactive shell to exit with " 518 "a non-zero exit status. An interactive shell returns a non-zero exit " 519 "status to indicate an error.]" 520 521 "[+SEE ALSO?\bcommand\b(1), \bksh\b(1)]" 522 ; 523 524 #ifndef ECHOPRINT 525 const char sh_optecho[] = " [-n] [arg...]"; 526 #endif /* !ECHOPRINT */ 527 528 const char sh_opteval[] = 529 "[-1c?\n@(#)$Id: eval (AT&T Research) 1999-07-07 $\n]" 530 USAGE_LICENSE 531 "[+NAME?eval - create a shell command and process it]" 532 "[+DESCRIPTION?\beval\b is a shell special built-in command that constructs " 533 "a command by concatenating the \aarg\as together, separating each " 534 "with a space. The resulting string is then taken as input to " 535 "the shell and evaluated in the current environment. Note that " 536 "command words are expanded twice; once to construct \aarg\a, and " 537 "again when the shell executes the constructed command.]" 538 "[+?It is not an error if \aarg\a is not given.]" 539 "\n" 540 "\n[arg...]\n" 541 "\n" 542 "[+EXIT STATUS?If \aarg\a is not specified, the exit status is \b0\b. " 543 "Otherwise, it is the exit status of the command defined by the " 544 "\aarg\a operands.]" 545 "[+SEE ALSO?\bexec\b(1), \btrap\b(1), \b.\b(1)]" 546 ; 547 548 const char sh_optexec[] = 549 "[-1c?\n@(#)$Id: exec (AT&T Research) 1999-07-10 $\n]" 550 USAGE_LICENSE 551 "[+NAME?exec - execute command, open/close and duplicate file descriptors]" 552 "[+DESCRIPTION?\bexec\b is a special built-in command that can be used to " 553 "manipulate file descriptors or to replace the current shell " 554 "with a new command.]" 555 "[+?If \acommand\a is specified, then the current shell process will be " 556 "replaced by \acommand\a rather than running \acommand\a and waiting " 557 "for it to complete. Note that there is no need to use " 558 "\bexec\b to enhance performance since the shell implicitly " 559 "uses the exec mechanism internally whenever possible.]" 560 "[+?If no operands are specified, \bexec\b can be used to open or " 561 "close files, or to manipulate file descriptors from \b0\b to " 562 "\b9\b in the current shell environment using the standard " 563 "redirection mechanism available with all commands. The " 564 "close-on-exec flags will be set on file descriptor numbers " 565 "greater than \b2\b that are opened this way so that they " 566 "will be closed when another program is invoked.]" 567 "[+?Because \bexec\b is a special command, any failure will cause the " 568 "script that invokes it to exit. This can be prevented by " 569 "invoking \bexec\b from the \bcommand\b utility.]" 570 "[+?\bexec\b cannot be invoked from a restricted shell to create " 571 "files or to open a file for writing or appending.]" 572 "[c?Clear all environment variables before executions except variable " 573 "assignments that are part of the current \bexec\b command.]" 574 "[a]:[name?\bargv[0]]\b will be set to \aname\a for \acommand\a]" 575 "\n" 576 "\n[command [arg ...]]\n" 577 "\n" 578 "[+EXIT STATUS?If \acommand\a is specified, \bexec\b does not return. " 579 "Otherwise, the exit status is one of the following:]{" 580 "[+0?All I/O redirections were successful.]" 581 "[+>0?An error occurred.]" 582 "}" 583 "[+SEE ALSO?\bcommand\b(1), \beval\b(1)]" 584 ; 585 586 587 const char sh_optexit[] = 588 "[-1c?\n@(#)$Id: exit (AT&T Research) 1999-07-07 $\n]" 589 USAGE_LICENSE 590 "[+NAME?exit - exit the current shell]" 591 "[+DESCRIPTION?\bexit\b is shell special built-in that causes the " 592 "shell that invokes it to exit. Before exiting the shell, if the " 593 "\bEXIT\b trap is set it will be invoked.]" 594 "[+?If \an\a is given, it will be used to set the exit status.]" 595 "\n" 596 "\n[n]\n" 597 "\n" 598 "[+EXIT STATUS?If \an\a is specified, the exit status is the least significant " 599 "eight bits of the value of \an\a. Otherwise, the exit status is the " 600 "exit status of preceding command. When invoked inside a trap, the " 601 "preceding command means the command that invoked the trap.]" 602 "[+SEE ALSO?\bbreak\b(1), \breturn\b(1)]" 603 ; 604 605 const char sh_optexport[] = 606 "[-1c?\n@(#)$Id: export (AT&T Research) 1999-07-07 $\n]" 607 USAGE_LICENSE 608 "[+NAME?export - set export attribute on variables]" 609 "[+DESCRIPTION?\bexport\b sets the export attribute on each of " 610 "the variables specified by \aname\a which causes them " 611 "to be in the environment of subsequently executed commands. " 612 "If \b=\b\avalue\a is specified, the variable \aname\a is " 613 "set to \avalue\a.]" 614 "[+?If no \aname\as are specified then the names and values of all " 615 "exported variables are written to standard output.]" 616 "[+?\bexport\b is built-in to the shell as a declaration command so that " 617 "field splitting and pathname expansion are not performed on " 618 "the arguments. Tilde expansion occurs on \avalue\a.]" 619 "[p?Causes the output to be in the form of \bexport\b commands that can be " 620 "used as input to the shell to recreate the current exports.]" 621 "\n" 622 "\n[name[=value]...]\n" 623 "\n" 624 "[+EXIT STATUS?]{" 625 "[+0?Successful completion.]" 626 "[+>0?An error occurred.]" 627 "}" 628 629 "[+SEE ALSO?\bsh\b(1), \btypeset\b(1)]" 630 ; 631 632 const char sh_optgetopts[] = 633 ":[-1c?\n@(#)$Id: getopts (AT&T Research) 2005-01-01 $\n]" 634 "[-author?Glenn Fowler <gsf@research.att.com>]" 635 USAGE_LICENSE 636 "[+NAME?\f?\f - parse utility options]" 637 "[+DESCRIPTION?The \bgetopts\b utility can be used to retrieve options and " 638 "arguments from a list of arguments given by \aargs\a or the positional " 639 "parameters if \aargs\a is omitted. It can also generate usage messages " 640 "and a man page for the command based on the information in \aoptstring\a.]" 641 "[+?Each time it is invoked, the \bgetopts\b utility places the value " 642 "of the next option in the shell variable specified by the \aname\a " 643 "operand and the index of the next argument to be processed in the " 644 "shell variable \bOPTIND\b. When the shell is invoked \bOPTIND\b " 645 "is initialized to \b1\b. When an option requires or permits an option " 646 "argument, \bgetopts\b places the option argument in the shell " 647 "variable \bOPTARG\b. Otherwise \bOPTARG\b is set to \b1\b when the " 648 "option is set and \b0\b when the option is unset.]" 649 "[+?The \aoptstring\a string consists of alpha-numeric characters, " 650 "the special characters +, -, ?, :, and <space>, or character groups " 651 "enclosed in [...]]. Character groups may be nested in {...}. " 652 "Outside of a [...]] group, a single new-line followed by zero or " 653 "more blanks is ignored. One or more blank lines separate the " 654 "options from the command argument synopsis.]" 655 "[+?Each [...]] group consists of an optional label, " 656 "optional attributes separated by :, and an " 657 "optional description string following ?. The characters from the ? " 658 "to the end of the next ]] are ignored for option parsing and short " 659 "usage messages. They are used for generating verbose help or man pages. " 660 "The : character may not appear in the label. " 661 "The ? character must be specified as ?? in the label and the ]] character " 662 "must be specified as ]]]] in the description string. " 663 "Text between two \\b (backspace) characters indicates " 664 "that the text should be emboldened when displayed. " 665 "Text between two \\a (bell) characters indicates that the text should " 666 "be emphasized or italicized when displayed. " 667 "Text between two \\v (vertical tab) characters indicates " 668 "that the text should displayed in a fixed width font. " 669 "Text between two \\f (formfeed) characters will be replaced by the " 670 "output from the shell function whose name is that of the enclosed text.]" 671 "[+?All output from this interface is written to the standard error.]" 672 "[+?There are several group types:]{" 673 "[+1.?A group of the form " 674 "[-[\aversion\a]][\aflag\a[\anumber\a]]]]...[?\atext\a]]]] " 675 "appearing as the first group enables the extended interface. \aversion\a " 676 "specifies the interface version, currently \b1\b. The latest version is " 677 "assumed if \aversion\a is omitted. Future enhancements " 678 "may increment \aversion\a, but all versions will be supported. \atext\a " 679 "typically specifies an SCCS or CVS identification string. Zero or more " 680 "\aflags\a with optional \anumber\a values may be specified to control " 681 "option parsing. " 682 "The flags are:]{" 683 "[++?Arguments beginning with + are considered options.]" 684 "[+c?Cache this \aoptstring\a for multiple passes. Used to optimize " 685 "builtins that may be called many times within the same process.]" 686 "[+i?Ignore this \aoptstring\a when generating help. Used when " 687 "combining \aoptstring\a values from multiple passes.]" 688 "[+l?Display only \alongname\a options in help messages.]" 689 "[+n?Associate -\anumber\a and +\anumber\a options with the first " 690 "option with numeric arguments.]" 691 "[+o?The \b-\b option character prefix is optional (supports " 692 "obsolete \bps\b(1) option syntax.)]" 693 "[+p?\anumber\a specifies the number of \b-\b characters that must " 694 "prefix long option names. The default is \b2\b; \b0\b, \b1\b or " 695 "\b2\b are accepted (e.g., \bp0\b for \bdd\b(1) and \bp1\b for " 696 "\bfind\b(1).)]" 697 "[+s?\anumber\a specifies the \b--??man\b section number, " 698 "\b1\b by default.]" 699 "}" 700 "[+2.?An option specification of the form " 701 "[\aoption\a[!]][=\anumber\a]][:\alongname\a]][?\atext\a]]]]. In this " 702 "case the first field is the option character; this is the value returned " 703 "in the \aname\a operand when the option is matched. If there is no " 704 "option character then a two or more digit number should be specified. " 705 "This number will be returned as the value of the \aname\a operand if the " 706 "long option is matched. If \aoption\a is followed by \b!\b then the option " 707 "character sense is the inverse of the longname sense. For options that do " 708 "not take values \bOPTARG\b will be set to \b0\b for \b!\b inverted option " 709 "characters and \b1\b otherwise. =\anumber\a optionally specifies a number to " 710 "be returned in the \aname\a operand instead of the option character. A " 711 "longname is specified by \b--\b\alongname\a and is matched by the shortest " 712 "non-ambiguous prefix of all long options. * in the \alongname\a field " 713 "indicates that only characters up to that point need to match, provided " 714 "any additional characters match exactly. The enclosing [ and ]] can be " 715 "omitted for an option that does not have a longname or descriptive text.]" 716 "[+3.?An option argument specification. " 717 "Options that take arguments can be followed by : (string value) or # " 718 "(numeric value) and an option argument specification. An option argument " 719 "specification consists of the option argument name as field 1. " 720 "The remaining \b:\b separated fields are a type name and zero or more of " 721 "the special attribute words \blistof\b, \boneof\b, and \bignorecase\b. " 722 "A default option value may be specified in the final field as " 723 "\b:=\b\adefault\a. The option argument specification may be followed " 724 "by a list of option value descriptions enclosed in braces. " 725 "A long option that takes an argument is specified as " 726 "\b--\b\alongname\a=\avalue\a. If the : or # is followed by ? then the " 727 "option argument is optional. If only the option character form is " 728 "specified then the optional argument value is not set if the next " 729 "argument starts with - or +.]" 730 "[+4.?A option value description.]" 731 "[+5.?A argument specification. A list of valid option argument values " 732 "can be specified by enclosing them inside a {...} following " 733 "the option argument specification. Each of the permitted " 734 "values can be specified with a [...]] containing the " 735 "value followed by a description.]" 736 "[+6.?A group of the form [+\\n...]] will display the characters " 737 "representing ... in fixed with font without adding line breaks.]" 738 "[+7.?A group of the form [+\aname\a?\atext\a]] specifies a section " 739 "\aname\a with descriptive \atext\a. If \aname\a is omitted then " 740 "\atext\a is placed in a new paragraph.]" 741 "[+8.?A group of the form [-\aname\a?\atext\a]] specifies entries " 742 "for the \bIMPLEMENTATION\b section.]" 743 "}" 744 "[+?A leading : character in \aoptstring\a " 745 "affects the way errors are handled. If an option character or longname " 746 "argument not specified in \aoptstring\a is encountered when processing " 747 "options, the shell variable whose name is \aname\a will be set to the ? " 748 "character. The shell variable \bOPTARG\b will be set to " 749 "the character found. If an option argument is missing or has an invalid " 750 "value, then \aname\a will be set to the : character and the shell variable " 751 "\bOPTARG\b will be set to the option character found. " 752 "Without the leading :, \aname\a will be set to the ? character, \bOPTARG\b " 753 "will be unset, and an error message will be written to standard error " 754 "when errors are encountered.]" 755 "[+?A leading + character or a + following a leading : in \aoptstring\a " 756 "specifies that arguments beginning with + will also be considered options.]" 757 "[+?The end of options occurs when:]{" 758 "[+1.?The special argument \b--\b is encountered.]" 759 "[+2.?An argument that does not begin with a \b-\b is encountered.]" 760 "[+3.?A help argument is specified.]" 761 "[+4.?An error is encountered.]" 762 "}" 763 "[+?If \bOPTIND\b is set to the value \b1\b, a new set of arguments " 764 "can be used.]" 765 "[+?\bgetopts\b can also be used to generate help messages containing command " 766 "usage and detailed descriptions. Specify \aargs\a as:]" 767 "{ " 768 "[+-???To generate a usage synopsis.]" 769 "[+--?????To generate a verbose usage message.]" 770 "[+--????man?To generate a formatted man page.]" 771 "[+--????api?To generate an easy to parse usage message.]" 772 "[+--????html?To generate a man page in \bhtml\b format.]" 773 "[+--????nroff?To generate a man page in \bnroff\b format.]" 774 "[+--????usage?List the current \aoptstring\a.]" 775 "[+--??????\aname\a?List \bversion=\b\an\a, \an\a>0, " 776 "if the option \aname\a is recognized by \bgetopts\b.]" 777 "}" 778 "[+?When the end of options is encountered, \bgetopts\b exits with a " 779 "non-zero return value and the variable \bOPTIND\b is set to the " 780 "index of the first non-option argument.]" 781 "a:[name?Use \aname\a instead of the command name in usage messages.]" 782 "\n" 783 "\nopstring name [args...]\n" 784 "\n" 785 "[+EXIT STATUS]{" 786 "[+0?An option specified was found.]" 787 "[+1?An end of options was encountered.]" 788 "[+2?A usage or information message was generated.]" 789 "}" 790 ; 791 792 const char sh_optbg[] = 793 "[-1c?@(#)$Id: bg (AT&T Research) 2000-04-02 $\n]" 794 USAGE_LICENSE 795 "[+NAME?bg - resume jobs in the background]" 796 "[+DESCRIPTION?\bbg\b places the given \ajob\as into the background " 797 "and sends them a \bCONT\b signal to start them running.]" 798 "[+?If \ajob\a is omitted, the most recently started or stopped " 799 "background job is resumed or continued in the background.]" 800 "[+?Each \ajob\a can be specified as one of the following:]{" 801 "[+\anumber\a?\anumber\a refers to a process id.]" 802 "[+-\anumber\a?\anumber\a refers to a process group id.]" 803 "[+%\anumber\a?\anumber\a refer to a job number.]" 804 "[+%\astring\a?Refers to a job whose name begins with \astring\a.]" 805 "[+%??\astring\a?Refers to a job whose name contains \astring\a.]" 806 "[+%+ \bor\b %%?Refers to the current job.]" 807 "[+%-?Refers to the previous job.]" 808 "}" 809 "\n" 810 "\n[job ...]\n" 811 "\n" 812 "[+EXIT STATUS?]{" 813 "[+0?If all background jobs are started.]" 814 "[+>0?If one more jobs does not exist or there are no background " 815 "jobs.]" 816 "}" 817 818 "[+SEE ALSO?\bwait\b(1), \bfg\b(1), \bdisown\b(1), \bjobs\b(1)]" 819 ; 820 821 const char sh_optfg[] = 822 "[-1c?@(#)$Id: fg (AT&T Research) 2000-04-02 $\n]" 823 USAGE_LICENSE 824 "[+NAME?fg - move jobs to the foreground]" 825 "[+DESCRIPTION?\bfg\b places the given \ajob\as into the foreground " 826 "in sequence and sends them a \bCONT\b signal to start each running.]" 827 "[+?If \ajob\a is omitted, the most recently started or stopped " 828 "background job is moved to the foreground.]" 829 "[+?Each \ajob\a can be specified as one of the following:]{" 830 "[+\anumber\a?\anumber\a refers to a process id.]" 831 "[+-\anumber\a?\anumber\a refers to a process group id.]" 832 "[+%\anumber\a?\anumber\a refer to a job number.]" 833 "[+%\astring\a?Refers to a job whose name begins with \astring\a.]" 834 "[+%??\astring\a?Refers to a job whose name contains \astring\a.]" 835 "[+%+ \bor\b %%?Refers to the current job.]" 836 "[+%-?Refers to the previous job.]" 837 "}" 838 "\n" 839 "\n[job ...]\n" 840 "\n" 841 "[+EXIT STATUS?If \bfg\b brings one or more jobs into the foreground, " 842 "the exit status of \bfg\b will be that of the last \ajob\a. " 843 "If one or more jobs does not exist or has completed, \bfg\b will " 844 "return a non-zero exit status.]" 845 "}" 846 847 "[+SEE ALSO?\bwait\b(1), \bbg\b(1), \bjobs\b(1)]" 848 ; 849 850 const char sh_optdisown[] = 851 "[-1c?@(#)$Id: disown (AT&T Research) 2000-04-02 $\n]" 852 USAGE_LICENSE 853 "[+NAME?disown - disassociate a job with the current shell]" 854 "[+DESCRIPTION?\bdisown\b prevents the current shell from sending " 855 "a \bHUP\b signal to each of the given \ajob\as when " 856 "the current shell terminates a login session.]" 857 "[+?If \ajob\a is omitted, the most recently started or stopped " 858 "background job is used.]" 859 "[+?Each \ajob\a can be specified as one of the following:]{" 860 "[+\anumber\a?\anumber\a refers to a process id.]" 861 "[+-\anumber\a?\anumber\a refers to a process group id.]" 862 "[+%\anumber\a?\anumber\a refer to a job number.]" 863 "[+%\astring\a?Refers to a job whose name begins with \astring\a.]" 864 "[+%??\astring\a?Refers to a job whose name contains \astring\a.]" 865 "[+%+ \bor\b %%?Refers to the current job.]" 866 "[+%-?Refers to the previous job.]" 867 "}" 868 "\n" 869 "\n[job ...]\n" 870 "\n" 871 "[+EXIT STATUS?]{" 872 "[+0?If all jobs are successfully disowned.]" 873 "[+>0?If one more \ajob\as does not exist.]" 874 "}" 875 876 "[+SEE ALSO?\bwait\b(1), \bbg\b(1), \bjobs\b(1)]" 877 ; 878 879 const char sh_optjobs[] = 880 "[-1c?@(#)$Id: jobs (AT&T Research) 2000-04-02 $\n]" 881 USAGE_LICENSE 882 "[+NAME?jobs - display status of jobs]" 883 "[+DESCRIPTION?\bjobs\b displays information about specified \ajob\as " 884 "that were started by the current shell environment on standard " 885 "output. The information contains the job number enclosed in " 886 "[...]], the status, and the command line that started the job.]" 887 "[+?If \ajob\a is omitted, \bjobs\b displays the status of all stopped jobs, " 888 "background jobs, and all jobs whose status has changed since last " 889 "reported by the shell.]" 890 "[+?When \bjobs\b reports the termination status of a job, the " 891 "shell removes the jobs from the list of known jobs in " 892 "the current shell environment.]" 893 "[+?Each \ajob\a can be specified as one of the following:]{" 894 "[+\anumber\a?\anumber\a refers to a process id.]" 895 "[+-\anumber\a?\anumber\a refers to a process group id.]" 896 "[+%\anumber\a?\anumber\a refer to a job number.]" 897 "[+%\astring\a?Refers to a job whose name begins with \astring\a.]" 898 "[+%??\astring\a?Refers to a job whose name contains \astring\a.]" 899 "[+%+ \bor\b %%?Refers to the current job.]" 900 "[+%-?Refers to the previous job.]" 901 "}" 902 "[l?\bjobs\b displays process id's after the job number in addition " 903 "to the usual information]" 904 "[n?Only the jobs whose status has changed since the last prompt " 905 "is displayed.]" 906 "[p?The process group leader id's for the specified jobs are displayed.]" 907 "\n" 908 "\n[job ...]\n" 909 "\n" 910 "[+EXIT STATUS?]{" 911 "[+0?The information for each job is written to standard output.]" 912 "[+>0?One or more jobs does not exist.]" 913 "}" 914 915 "[+SEE ALSO?\bwait\b(1), \bps\b(1), \bfg\b(1), \bbg\b(1)]" 916 ; 917 918 const char sh_opthist[] = 919 "[-1cn?@(#)$Id: hist (AT&T Research) 2000-04-02 $\n]" 920 USAGE_LICENSE 921 "[+NAME?\f?\f - process command history list]" 922 "[+DESCRIPTION?\b\f?\f\b lists, edits, or re-executes, commands " 923 "previously entered into the current shell environment.]" 924 "[+?The command history list references commands by number. The first number " 925 "in the list is selected arbitrarily. The relationship of a number " 926 "to its command does not change during a login session. When the " 927 "number reaches 32767 the number wraps around to 1 but " 928 "maintains the ordering.]" 929 "[+?When commands are edited (when the \b-l\b option is not specified), the " 930 "resulting lines will be entered at the end of the history list and " 931 "then reexecuted by the current shell. The \b\f?\f\b command that " 932 "caused the editing will not be entered into the history list. If the " 933 "editor returns a non-zero exit status, this will suppress the " 934 "entry into the history list and the command reexecution. Command " 935 "line variable assignments and redirections affect both the \f?\f " 936 "command and the commands that are reexecuted.]" 937 "[+?\afirst\a and \alast\a define the range of commands. \afirst\a and " 938 "\alast\a can be one of the following:]{" 939 "[+\anumber\a?A positive number representing a command " 940 "number. A \b+\b sign can precede \anumber\a.]" 941 "[+-\anumber\a?A negative number representing a command " 942 "that was executed \anumber\a commands previously. " 943 "For example, \b-1\b is the previous command.]" 944 "[+\astring\a?\astring\a indicates the most recently " 945 "entered command that begins with \astring\a. " 946 "\astring\a should not contain an \b=\b.]" 947 "}" 948 "[+?If \afirst\a is omitted, the previous command is used, unless \b-l\b " 949 "is specified, in which case it will default to \b-16\b and \alast\a " 950 "will default to \b-1\b.]" 951 "[+?If \afirst\a is specified and \alast\a is omitted, then \alast\a will " 952 "default to \afirst\a unless \b-l\b is specified in which case " 953 "it will default to \b-1\b.]" 954 "[+?If no editor is specified, then the editor specfied by the \bHISTEDIT\b " 955 "variable will be used if set, or the \bFCEDIT\b variable will be " 956 "used if set, otherwise, \bed\b will be used.]" 957 "[e]:[editor?\aeditor\a specifies the editor to use to edit the history " 958 "command. A value of \b-\b for \aeditor\a is equivalent to " 959 "specifiying the \b-s\b option.]" 960 "[l?List the commands rather than editing and reexecuting them.]" 961 "[N]#[num?Start at \anum\a commands back.]" 962 "[n?Suppress the command numbers when the commands are listed.]" 963 #if SHOPT_HISTEXPAND 964 "[p?Writes the result of history expansion for each operand to standard " 965 "output. All other options are ignored.]" 966 #endif 967 "[r?Reverse the order of the commands.]" 968 "[s?Reexecute the command without invoking an editor. In this case " 969 "an operand of the form \aold\a\b=\b\anew\a can be specified " 970 "to change the first occurrence of the string \aold\a in the " 971 "command to \anew\a before reexecuting the command.]" 972 973 "\n" 974 "\n[first [last] ]\n" 975 "\n" 976 "[+EXIT STATUS?If a command is reexecuted, the exit status is that of " 977 "the command that gets reexecuted. Otherwise, it is one of the " 978 "following:]{" 979 "[+0?Successfully completion of the listing.]" 980 "[+>0?An error occurred.]" 981 "}" 982 983 "[+SEE ALSO?\bksh\b(1), \bsh\b(1), \bed\b(1)]" 984 ; 985 986 const char sh_optkill[] = 987 "[-1c?\n@(#)$Id: kill (AT&T Research) 1999-06-17 $\n]" 988 USAGE_LICENSE 989 "[+NAME?kill - terminate or signal process]" 990 "[+DESCRIPTION?With the first form in which \b-l\b is not specified, " 991 "\bkill\b sends a signal to one or more processes specified by " 992 "\ajob\a. This normally terminates the processes unless the signal " 993 "is being caught or ignored.]" 994 "[+?A \ajob\a can be specified as one of the following:]{" 995 "[+\anumber\a?\anumber\a refers to a process id.]" 996 "[+-\anumber\a?\anumber\a refers to a process group id.]" 997 "[+%\anumber\a?\anumber\a refer to a job number.]" 998 "[+%\astring\a?Refers to a job whose name begins with \astring\a.]" 999 "[+%??\astring\a?Refers to a job whose name contains \astring\a.]" 1000 "[+%+ \bor\b %%?Refers to the current job.]" 1001 "[+%-?Refers to the previous job.]" 1002 "}" 1003 "[+?If the signal is not specified with either the \b-n\b or the \b-s\b " 1004 "option, the \bSIGTERM\b signal is used.]" 1005 "[+?If \b-l\b is specified, and no \aarg\a is specified, then \bkill\b " 1006 "writes the list of signals to standard output. Otherwise, \aarg\a " 1007 "can be either a signal name, or a number representing either a " 1008 "signal number or exit status for a process that was terminated " 1009 "due to a signal. If a name is given the corresponding signal " 1010 "number will be written to standard output. If a number is given " 1011 "the corresponding signal name will be written to standard output.]" 1012 "[l?List signal names or signal numbers rather than sending signals as " 1013 "described above. " 1014 "The \b-n\b and \b-s\b options cannot be specified.]" 1015 "[n]#[signum?Specify a signal number to send. Signal numbers are not " 1016 "portable across platforms, except for the following:]{" 1017 "[+0?No signal]" 1018 "[+1?\bHUP\b]" 1019 "[+2?\bINT\b]" 1020 "[+3?\bQUIT\b]" 1021 "[+6?\bABRT\b]" 1022 "[+9?\bKILL\b]" 1023 "[+14?\bALRM\b]" 1024 "[+15?\bTERM\b]" 1025 "}" 1026 "[s]:[signame?Specify a signal name to send. The signal names are derived " 1027 "from their names in \b<signal.h>\b without the \bSIG\b prefix and " 1028 "are case insensitive. \bkill -l\b will generate the list of " 1029 "signals on the current platform.]" 1030 "\n" 1031 "\njob ...\n" 1032 " -l [arg ...]\n" 1033 "\n" 1034 "[+EXIT STATUS?]{" 1035 "[+0?At least one matching process was found for each \ajob\a " 1036 "operand, and the specified signal was successfully sent to at " 1037 "least one matching process.]" 1038 "[+>0?An error occurred.]" 1039 "}" 1040 "[+SEE ALSO?\bps\b(1), \bjobs\b(1), \bkill\b(2), \bsignal\b(2)]" 1041 ; 1042 1043 const char sh_optlet[] = 1044 "[-1c?@(#)$Id: let (AT&T Research) 2000-04-02 $\n]" 1045 USAGE_LICENSE 1046 "[+NAME?let - evaluate arithmetic expressions]" 1047 "[+DESCRIPTION?\blet\b evaluates each \aexpr\a in the current " 1048 "shell environment as an arithmetic expression using ANSI C " 1049 "syntax. Variables names are shell variables and they " 1050 "are recursively evaluated as arithmetic expressions to " 1051 "get numerical values.]" 1052 "[+?\blet\b has been made obsolete by the \b((\b...\b))\b syntax " 1053 "of \bksh\b(1) which does not require quoting of the operators " 1054 "to pass them as command arguments.]" 1055 "\n" 1056 "\n[expr ...]\n" 1057 "\n" 1058 "[+EXIT STATUS?]{" 1059 "[+0?The last \aexpr\a evaluates to a non-zero value.]" 1060 "[+>0?The last \aexpr\a evaluates to \b0\b or an error occurred.]" 1061 "}" 1062 1063 "[+SEE ALSO?\bexpr\b(1), \btest\b(1), \bksh\b(1)]" 1064 ; 1065 1066 const char sh_optprint[] = 1067 "[-1c?\n@(#)$Id: print (AT&T Research) 2008-11-26 $\n]" 1068 USAGE_LICENSE 1069 "[+NAME?print - write arguments to standard output]" 1070 "[+DESCRIPTION?By default, \bprint\b writes each \astring\a operand to " 1071 "standard output and appends a newline character.]" 1072 "[+?Unless, the \b-r\b or \b-f\b option is specified, each \b\\\b " 1073 "character in each \astring\a operand is processed specially as " 1074 "follows:]{" 1075 "[+\\a?Alert character.]" 1076 "[+\\b?Backspace character.]" 1077 "[+\\c?Terminate output without appending newline. The " 1078 "remaining \astring\a operands are ignored.]" 1079 "[+\\f?Formfeed character.]" 1080 "[+\\n?Newline character.]" 1081 "[+\\t?Tab character.]" 1082 "[+\\v?Vertical tab character.]" 1083 "[+\\\\?Backslash character.]" 1084 "[+\\E?Escape character (ASCII octal 033).]" 1085 "[+\\0\ax\a?The 8-bit character whose ASCII code is the " 1086 "1-, 2-, or 3-digit octal number \ax\a.]" 1087 "}" 1088 "[+?If both \b-e\b and \b-r\b are specified, the last one specified is " 1089 "the one that is used.]" 1090 "[+?When the \b-f\b option is specified and there are more \astring\a " 1091 "operands than format specifiers, the format string is " 1092 "reprocessed from the beginning. If there are fewer \astring\a " 1093 "operands than format specifiers, then outputting will end " 1094 "at the first unneeded format specifier.]" 1095 "[e?Unless \b-f\b is specified, process \b\\\b sequences in each \astring\a " 1096 "operand as described above. This is the default behavior.]" 1097 "[n?Do not append a new-line character to the output.]" 1098 "[f]:[format?Write the \astring\a arguments using the format string " 1099 "\aformat\a and do not append a new-line. See \bprintf\b for " 1100 "details on how to specify \aformat\a.]" 1101 "[p?Write to the current co-process instead of standard output.]" 1102 "[r?Do not process \b\\\b sequences in each \astring\a operand as described " 1103 "above.]" 1104 "[s?Write the output as an entry in the shell history file instead of " 1105 "standard output.]" 1106 "[u]:[fd:=1?Write to file descriptor number \afd\a instead of standard output.]" 1107 "[v?Treat each \astring\a as a variable name and write the value in \b%B\b " 1108 "format. Cannot be used with \b-f\b.]" 1109 "[C?Treat each \astring\a as a variable name and write the value in \b%#B\b " 1110 "format. Cannot be used with \b-f\b.]" 1111 "\n" 1112 "\n[string ...]\n" 1113 "\n" 1114 "[+EXIT STATUS?]{" 1115 "[+0?Successful completion.]" 1116 "[+>0?An error occurred.]" 1117 "}" 1118 "[+SEE ALSO?\becho\b(1), \bprintf\b(1), \bread\b(1)]" 1119 ; 1120 1121 const char sh_optprintf[] = 1122 "[-1c?\n@(#)$Id: printf (AT&T Research) 2009-02-02 $\n]" 1123 USAGE_LICENSE 1124 "[+NAME?printf - write formatted output]" 1125 "[+DESCRIPTION?\bprintf\b writes each \astring\a operand to " 1126 "standard output using \aformat\a to control the output format.]" 1127 "[+?The \aformat\a operands supports the full range of ANSI C formatting " 1128 "specifiers plus the following additional specifiers:]{" 1129 "[+%b?Each character in the \astring\a operand is processed " 1130 "specially as follows:]{" 1131 "[+\\a?Alert character.]" 1132 "[+\\b?Backspace character.]" 1133 "[+\\c?Terminate output without appending newline. " 1134 "The remaining \astring\a operands are ignored.]" 1135 "[+\\f?Formfeed character.]" 1136 "[+\\n?Newline character.]" 1137 "[+\\t?Tab character.]" 1138 "[+\\v?Vertical tab character.]" 1139 "[+\\\\?Backslash character.]" 1140 "[+\\E?Escape character (ASCII octal 033).]" 1141 "[+\\0\ax\a?The 8-bit character whose ASCII code is " 1142 "the 1-, 2-, or 3-digit octal number \ax\a.]" 1143 "}" 1144 "[+%q?Output \astring\a quoted in a manner that it can be read in " 1145 "by the shell to get back the same string. However, empty " 1146 "strings resulting from missing \astring\a operands will " 1147 "not be quoted.]" 1148 "[+%B?Treat the argument as a variable name and output the value " 1149 "without converting it to a string. This is most useful for " 1150 "variables of type \b-b\b.]" 1151 "[+%H?Output \astring\a with characters \b<\b, \b&\b, \b>\b, " 1152 "\b\"\b, and non-printable characters properly escaped for " 1153 "use in HTML and XML documents.]" 1154 "[+%P?Treat \astring\a as an extended regular expression and " 1155 "convert it to a shell pattern.]" 1156 "[+%R?Treat \astring\a as an shell pattern expression and " 1157 "convert it to an extended regular expression.]" 1158 "[+%T?Treat \astring\a as a date/time string and format it. The " 1159 "\bT\b can be preceded by \b(\b\adformat\a\b)\b, where " 1160 "\adformat\a is a date format as defined by the \bdate\b " 1161 "command.]" 1162 "[+%Z?Output a byte whose value is \b0\b.]" 1163 "}" 1164 "[+?When performing conversions of \astring\a to satisfy a numeric " 1165 "format specifier, if the first character of \astring\a " 1166 "is \b\"\b or \b'\b, then the value will be the numeric value " 1167 "in the underlying code set of the character following the " 1168 "\b\"\b or \b'\b. Otherwise, \astring\a is treated like a shell " 1169 "arithmetic expression and evaluated.]" 1170 "[+?If a \astring\a operand cannot be completely converted into a value " 1171 "appropriate for that format specifier, an error will occur, " 1172 "but remaining \astring\a operands will continue to be processed.]" 1173 "[+?In addition to the format specifier extensions, the following " 1174 "extensions of ANSI-C are permitted in format specifiers:]{" 1175 "[+-?The escape sequences \b\\E\b and \b\\e\b expand to the escape " 1176 "character which is octal \b033\b in ASCII.]" 1177 "[+-?The escape sequence \b\\c\b\ax\a expands to Control-\ax\a.]" 1178 "[+-?The escape sequence \b\\C[.\b\aname\a\b.]]\b expands to " 1179 "the collating element \aname\a.]" 1180 "[+-?The escape sequence \b\\x{\b\ahex\a\b}\b expands to the " 1181 "character corresponding to the hexidecimal value \ahex\a.]" 1182 "[+-?The format modifier flag \b=\b can be used to center a field to " 1183 "a specified width.]" 1184 "[+-?The format modifier flag \bL\b can be used with the \bc\b and " 1185 "\bs\b formats to treat precision as character width instead " 1186 "of byte count.]" 1187 "[+-?Each of the integral format specifiers can have a third " 1188 "modifier after width and precision that specifies the " 1189 "base of the conversion from 2 to 64. In this case the " 1190 "\b#\b modifier will cause \abase\a\b#\b to be prepended to " 1191 "the value.]" 1192 "[+-?The \b#\b modifier can be used with the \bd\b specifier when " 1193 "no base is specified cause the output to be written in units " 1194 "of \b1000\b with a suffix of one of \bk M G T P E\b.]" 1195 "[+-?The \b#\b modifier can be used with the \bi\b specifier to " 1196 "cause the output to be written in units of \b1024\b with " 1197 "a suffix of one of \bKi Mi Gi Ti Pi Ei\b.]" 1198 "}" 1199 "[+?If there are more \astring\a operands than format specifiers, the " 1200 "\aformat\a string is reprocessed from the beginning. If there are " 1201 "fewer \astring\a operands than format specifiers, then string " 1202 "specifiers will be treated as if empty strings were supplied, " 1203 "numeric conversions will be treated as if 0 were supplied, and " 1204 "time conversions will be treated as if \bnow\b were supplied.]" 1205 "[+?\bprintf\b is equivalent to \bprint -f\b which allows additional " 1206 "options to be specified.]" 1207 "\n" 1208 "\nformat [string ...]\n" 1209 "\n" 1210 "[+EXIT STATUS?]{" 1211 "[+0?Successful completion.]" 1212 "[+>0?An error occurred.]" 1213 "}" 1214 "[+SEE ALSO?\bdate\b(1), \bprint\b(1), \bread\b(1)]" 1215 ; 1216 1217 const char sh_optpwd[] = 1218 "[-1c?\n@(#)$Id: pwd (AT&T Research) 1999-06-07 $\n]" 1219 USAGE_LICENSE 1220 "[+NAME?pwd - write working directory name]" 1221 "[+DESCRIPTION?\bpwd\b writes an absolute pathname of the current working " 1222 "directory to standard output. An absolute pathname is a " 1223 "pathname that begins with \b/\b that does not contains any " 1224 "\b.\b or \b..\b components.]" 1225 "[+?If both \b-L\b and \b-P\b are specified, the last one specified will " 1226 "be used. If neither \b-P\b or \b-L\b is specified then the " 1227 "behavior will be determined by the \bgetconf\b parameter " 1228 "\bPATH_RESOLVE\b. If \bPATH_RESOLVE\b is \bphysical\b, " 1229 "then the behavior will be as if \b-P\b were specified. Otherwise, " 1230 "the behavior will be as if \b-L\b were specified.]" 1231 "[L?The absolute pathname may contains symbolic link components. This is " 1232 "the default.]" 1233 "[P?The absolute pathname will not contain any symbolic link components.]" 1234 "[+EXIT STATUS?]{" 1235 "[+0?Successful completion.]" 1236 "[+>0?An error occurred.]" 1237 "}" 1238 "[+SEE ALSO?\bcd\b(1), \bgetconf\b(1)]" 1239 ; 1240 1241 const char sh_optread[] = 1242 "[-1c?\n@(#)$Id: read (AT&T Research) 2006-12-19 $\n]" 1243 USAGE_LICENSE 1244 "[+NAME?read - read a line from standard input]" 1245 "[+DESCRIPTION?\bread\b reads a line from standard input and breaks it " 1246 "into fields using the characters in value of the \bIFS\b variable " 1247 "as separators. The escape character, \b\\\b, is used to remove " 1248 "any special meaning for the next character and for line continuation " 1249 "unless the \b-r\b option is specified.]" 1250 "[+?If there are more variables than fields, the remaining variables are " 1251 "set to empty strings. If there are fewer variables than fields, " 1252 "the leftover fields and their intervening separators are assigned " 1253 "to the last variable. If no \avar\a is specified then the variable " 1254 "\bREPLY\b is used.]" 1255 "[+?When \avar\a has the binary attribute and \b-n\b or \b-N\b is specified, " 1256 "the bytes that are read are stored directly into \bvar\b.]" 1257 "[+?If you specify \b?\b\aprompt\a after the first \avar\a, then \bread\b " 1258 "will display \aprompt\a on standard error when standard input " 1259 "is a terminal or pipe.]" 1260 "[A?Unset \avar\a and then create an indexed array containing each field in " 1261 "the line starting at index 0.]" 1262 "[C?Unset \avar\a and read \avar\a as a compound variable.]" 1263 "[d]:[delim?Read until delimiter \adelim\a instead of to the end of line.]" 1264 "[p?Read from the current co-process instead of standard input. An end of " 1265 "file causes \bread\b to disconnect the co-process so that another " 1266 "can be created.]" 1267 "[r?Do not treat \b\\\b specially when processing the input line.]" 1268 "[s?Save a copy of the input as an entry in the shell history file.]" 1269 "[u]#[fd:=0?Read from file descriptor number \afd\a instead of standard input.]" 1270 "[t]:[timeout?Specify a timeout \atimeout\a in seconds when reading from " 1271 "a terminal or pipe.]" 1272 "[n]#[nbyte?Read at most \ansize\a characters. For binary fields \asize\a " 1273 "will be in bytes.]" 1274 "[N]#[nbyte?Read exactly \ansize\a characters. For binary fields \asize\a " 1275 "will be in bytes.]" 1276 "[v?When reading from a terminal the value of the first variable is displayed " 1277 "and used as a default value.]" 1278 "\n" 1279 "\n[var?prompt] [var ...]\n" 1280 "\n" 1281 "[+EXIT STATUS?]{" 1282 "[+0? Successful completion.]" 1283 "[+>0?End of file was detected or an error occurred.]" 1284 "}" 1285 "[+SEE ALSO?\bprint\b(1), \bprintf\b(1), \bcat\b(1)]" 1286 ; 1287 1288 const char sh_optreadonly[] = 1289 "[-1c?\n@(#)$Id: readonly (AT&T Research) 2008-06-16 $\n]" 1290 USAGE_LICENSE 1291 "[+NAME?readonly - set readonly attribute on variables]" 1292 "[+DESCRIPTION?\breadonly\b sets the readonly attribute on each of " 1293 "the variables specified by \aname\a which prevents their " 1294 "values from being changed. If \b=\b\avalue\a is specified, " 1295 "the variable \aname\a is set to \avalue\a before the variable " 1296 "is made readonly.]" 1297 "[+?Within a type definition, if the value is not specified, then a " 1298 "value must be specified when creating each instance of the type " 1299 "and the value is readonly for each instance.]" 1300 "[+?If no \aname\as are specified then the names and values of all " 1301 "readonly variables are written to standard output.]" 1302 "[+?\breadonly\b is built-in to the shell as a declaration command so that " 1303 "field splitting and pathname expansion are not performed on " 1304 "the arguments. Tilde expansion occurs on \avalue\a.]" 1305 "[p?Causes the output to be in a form of \breadonly\b commands that can be " 1306 "used as input to the shell to recreate the current set of " 1307 "readonly variables.]" 1308 "\n" 1309 "\n[name[=value]...]\n" 1310 "\n" 1311 "[+EXIT STATUS?]{" 1312 "[+0?Successful completion.]" 1313 "[+>0?An error occurred.]" 1314 "}" 1315 1316 "[+SEE ALSO?\bsh\b(1), \btypeset\b(1)]" 1317 ; 1318 1319 const char sh_optreturn[] = 1320 "[-1c?\n@(#)$Id: return (AT&T Research) 1999-07-07 $\n]" 1321 USAGE_LICENSE 1322 "[+NAME?return - return from a function or dot script ]" 1323 "[+DESCRIPTION?\breturn\b is a shell special built-in that causes the " 1324 "function or dot script that invokes it to exit. " 1325 "If \breturn\b is invoked outside of a function or dot script " 1326 "it is equivalent to \bexit\b.]" 1327 "[+?If \breturn\b is invoked inside a function defined with the \bfunction\b " 1328 "reserved word syntax, then any \bEXIT\b trap set within the " 1329 "then function will be invoked in the context of the caller " 1330 "before the function returns.]" 1331 "[+?If \an\a is given, it will be used to set the exit status.]" 1332 "\n" 1333 "\n[n]\n" 1334 "\n" 1335 "[+EXIT STATUS?If \an\a is specified, the exit status is the least significant " 1336 "eight bits of the value of \an\a. Otherwise, the exit status is the " 1337 "exit status of preceding command.]" 1338 "[+SEE ALSO?\bbreak\b(1), \bexit\b(1)]" 1339 ; 1340 1341 1342 const char sh_optksh[] = 1343 "+[-1c?\n@(#)$Id: sh (AT&T Research) "SH_RELEASE" $\n]" 1344 USAGE_LICENSE 1345 "[+NAME?\b\f?\f\b - Shell, the standard command language interpreter]" 1346 "[+DESCRIPTION?\b\f?\f\b is a command language interpreter that " 1347 "executes commands read from a command line string, the " 1348 "standard input, or a specified file.]" 1349 "[+?If the \b-i\b option is present, or there are no \aarg\as and " 1350 "the standard input and standard error are attached to a " 1351 "terminal, the shell is considered to be interactive.]" 1352 "[+?The \b-s\b and \b-c\b options are mutually exclusive. If the \b-c\b " 1353 "option is specified, the first \aarg\a is the command-line string " 1354 "and must be specified. Any remaining \aarg\as will be used " 1355 "to initialize \b$0\b and positional parameters.]" 1356 "[+?If the neither \b-s\b nor \b-c\b is specified, then the first \barg\b " 1357 "will be the pathname of the file containing commands and \b$0\b " 1358 "will be set to this value. If there is no file with this pathname, " 1359 "and this pathame does not contain a \b/\b, then the \bPATH\b " 1360 "will be searched for an executable with this name. Any remaining " 1361 "\aarg\as will be used to initialize the positional parmaeters.]" 1362 "[+?Any option can use a \b+\b instead of a \b-\b to disable the corresponding " 1363 "option.]" 1364 "[c?Read the commands from the first \aarg\a.]" 1365 "[i?Specifies that the shell is interactive.]" 1366 "[l?Invoke the shell as a login shell; \b/etc/profile\b and \b$HOME/.profile\b, " 1367 "if they exist, are read before the first command.]" 1368 "[r\f:restricted\f?Invoke the shell in a restricted mode. A restricted " 1369 "shell does not permit any of the following:]{" 1370 "[+-?Changing the working directory.]" 1371 "[+-?Setting values or attributes of the variables \bSHELL\b, " 1372 "\bENV\b, \bFPATH\b, or \bPATH\b.]" 1373 "[+-?Executing any command whose name as a \b/\b in it.]" 1374 "[+-?Redirecting output of a command with \b>\b, \b>|\b, " 1375 "\b<>\b, or \b>>\b.]" 1376 "[+-?Adding or deleting built-in commands or libraries with " 1377 "\bbuiltin\b.]" 1378 "[+-?Executing \bcommand -p\b \a...\a .]" 1379 "}" 1380 "[s?Read the commands from standard input. The positional parameters will be " 1381 "initialized from \aarg\a.]" 1382 "[D\f:dump-strings\f?Do not execute the script, but output the set of double " 1383 "quoted strings preceded by a \b$\b. These strings are needed for " 1384 "localization of the script to different locales.]" 1385 "[E?Reads the file " 1386 #if SHOPT_SYSRC 1387 "\b/etc/ksh.kshrc\b, if it exists, as a profile, followed by " 1388 #endif 1389 "\b${ENV-$HOME/.kshrc}\b, if it exists, as a profile. " 1390 "On by default for interactive shells; use \b+E\b to disable.]" 1391 #if SHOPT_PFSH 1392 "[P?Invoke the shell as a profile shell. See \bpfexec\b(1).]" 1393 #endif 1394 #if SHOPT_KIA 1395 "[R]:[file?Do not execute the script, but create a cross reference database " 1396 "in \afile\a that can be used a separate shell script browser. The " 1397 "-R option requires a script to be specified as the first operand.]" 1398 #endif /* SHOPT_KIA */ 1399 #if SHOPT_REGRESS 1400 "[I:regress]:[intercept?Enable the regression test \aintercept\a. Must be " 1401 "the first command line option(s).]" 1402 #endif 1403 #if SHOPT_BASH 1404 "\fbash2\f" 1405 #endif 1406 "\fabc\f" 1407 "?" 1408 "[T?Enable implementation specific test code defined by mask.]#[mask]" 1409 "\n" 1410 "\n[arg ...]\n" 1411 "\n" 1412 "[+EXIT STATUS?If \b\f?\f\b executes command, the exit status will be that " 1413 "of the last command executed. Otherwise, it will be one of " 1414 "the following:]{" 1415 "[+0?The script or command line to be executed consists entirely " 1416 "of zero or more blank lines or comments.]" 1417 "[+>1-125?A noninteractive shell detected a syntax error, a variable " 1418 "assignment error, or an error in a special built-in.]" 1419 "[+126?\b-c\b and \b-s\b were not specified and the command script " 1420 "was found on \bPATH\b but was not executable.]" 1421 "[+127?\b-c\b and \b-s\b were not specified and the command script " 1422 "corresponding to \aarg\a could not be found.]" 1423 "}" 1424 1425 "[+SEE ALSO?\bset\b(1), \bbuiltin\b(1)]" 1426 ; 1427 const char sh_optset[] = 1428 "+[-1c?\n@(#)$Id: set (AT&T Research) 1999-09-28 $\n]" 1429 USAGE_LICENSE 1430 "[+NAME?set - set/unset options and positional parameters]" 1431 "[+DESCRIPTION?\bset\b sets or unsets options and positional parameters. " 1432 "Options that are specified with a \b-\b cause the options to " 1433 "be set. Options that are specified with a \b+\b cause the " 1434 "option to be unset.]" 1435 "[+?\bset\b without any options or arguments displays the names and " 1436 "values of all shell variables in the order of the collation " 1437 "sequence in the current locale. The values are quoted so that " 1438 "they are suitable for reinput to the shell.]" 1439 "[+?If no \aarg\as are specified, not even the end of options argument \b--\b, " 1440 "the positional parameters are unchanged. Otherwise, unless " 1441 "the \b-A\b options has been specified, the positional parameters " 1442 "are replaced by the list of \aarg\as. A first \aarg\a of " 1443 "\b--\b is ignored when setting positional parameters.]" 1444 "[+?For backward compatibility, a \bset\b command without any options " 1445 "specified whose first \aarg\a is \b-\b will turn off " 1446 "the \b-v\b and \b-x\b options. If any additional \aarg\as " 1447 "are specified, they will replace the positional parameters.]" 1448 "[s?Sort the positional parameters.]" 1449 "[A]:[name?Assign the arguments sequentially to the array named by \aname\a " 1450 "starting at subscript 0 rather than to the positional parameters.]" 1451 "\fabc\f" 1452 "[06:default?Restore all non-command line options to the default settings.]" 1453 "[07:state?List the current option state in the form of a \bset\b command " 1454 "that can be executed to restore the state.]" 1455 "\n" 1456 "\n[arg ...]\n" 1457 "\n" 1458 "[+EXIT STATUS?]{" 1459 "[+0?No errors occurred.]" 1460 "[+>0?An error occurred.]" 1461 "}" 1462 1463 "[+SEE ALSO?\btypeset\b(1), \bshift\b(1)]" 1464 ; 1465 1466 1467 1468 const char sh_optshift[] = 1469 "[-1c?\n@(#)$Id: shift (AT&T Research) 1999-07-07 $\n]" 1470 USAGE_LICENSE 1471 "[+NAME?shift - shift positional parameters]" 1472 "[+DESCRIPTION?\bshift\b is a shell special built-in that shifts the " 1473 "positional parameters to the left by the number of places " 1474 "defined by \an\a, or \b1\b if \an\a is omitted. The number of " 1475 "positional parameters remaining will be reduced by the " 1476 "number of places that are shifted.]" 1477 "[+?If \an\a is given, it will be evaluated as an arithmetic expression " 1478 "to determinate the number of places to shift. It is an error " 1479 "to shift more than the number of positional parameters or a " 1480 "negative number of places.]" 1481 "\n" 1482 "\n[n]\n" 1483 "\n" 1484 "[+EXIT STATUS?]{" 1485 "[+0?The positional parameters were successfully shifted.]" 1486 "[+>0?An error occurred.]" 1487 "}" 1488 "[+SEE ALSO?\bset\b(1)]" 1489 ; 1490 1491 const char sh_optsleep[] = 1492 "[-1c?\n@(#)$Id: sleep (AT&T Research) 2009-03-12 $\n]" 1493 USAGE_LICENSE 1494 "[+NAME?sleep - suspend execution for an interval]" 1495 "[+DESCRIPTION?\bsleep\b suspends execution for at least the time specified " 1496 "by \aduration\a or until a \bSIGALRM\b signal is received. " 1497 "\aduration\a may be one of the following:]" 1498 "{" 1499 "[+integer?The number of seconds to sleep.]" 1500 "[+floating point?The number of seconds to sleep. The actual " 1501 "granularity depends on the underlying system, normally " 1502 "around 1 millisecond.]" 1503 "[+P\an\a\bY\b\an\a\bM\b\an\a\bDT\b\an\a\bH\b\an\a\bM\b\an\a\bS?An ISO 8601 duration " 1504 "where at least one of the duration parts must be specified.]" 1505 "[+P\an\a\bW?An ISO 8601 duration specifying \an\a weeks.]" 1506 "[+p\an\a\bY\b\an\a\bM\b\an\a\bDT\b\an\a\bH\b\an\a\bm\b\an\a\bS?A case insensitive " 1507 "ISO 8601 duration except that \bM\b specifies months, \bm\b before \bs\b or \bS\b " 1508 "specifies minutes and after specifies milliseconds, \bu\b or \bU\b specifies " 1509 "microseconds, and \bn\b specifies nanoseconds.]" 1510 "[+date/time?Sleep until the \bdate\b(1) compatible date/time.]" 1511 "}" 1512 "[s?Sleep until a signal or a timeout is received. If \aduration\a is omitted " 1513 "or 0 then no timeout will be used.]" 1514 "\n" 1515 "\n[ duration ]\n" 1516 "\n" 1517 "[+EXIT STATUS?]{" 1518 "[+0?The execution was successfully suspended for at least \aduration\a " 1519 "or a \bSIGALRM\b signal was received.]" 1520 "[+>0?An error occurred.]" 1521 "}" 1522 "[+SEE ALSO?\bdate\b(1), \btime\b(1), \bwait\b(1)]" 1523 ; 1524 1525 const char sh_opttrap[] = 1526 "[-1c?\n@(#)$Id: trap (AT&T Research) 1999-07-17 $\n]" 1527 USAGE_LICENSE 1528 "[+NAME?trap - trap signals and conditions]" 1529 "[+DESCRIPTION?\btrap\b is a special built-in that defines actions to be " 1530 "taken when conditions such as receiving a signal occur. Also, " 1531 "\btrap\b can be used to display the current trap settings on " 1532 "standard output.]" 1533 "[+?If \aaction\a is \b-\b, \btrap\b resets each \acondition\a " 1534 "to the default value. If \aaction\a is an empty string, the " 1535 "shell ignores each of the \acondition\as if they arise. " 1536 "Otherwise, the argument \aaction\a will be read and executed " 1537 "by the shell as if it were processed by \beval\b(1) when one " 1538 "of the corresponding conditions arise. The action of the trap " 1539 "will override any previous action associated with each specified " 1540 "\acondition\a. The value of \b$?\b is not altered by the trap " 1541 "execution.]" 1542 "[+?\acondition\a can be the name or number of a signal, or one of the " 1543 "following:]{" 1544 "[+EXIT?This trap is executed when the shell exits. If defined " 1545 "within a function defined with the \bfunction\b reserved " 1546 "word, the trap is executed in the caller's environment " 1547 "when the function returns and the trap action is restored " 1548 "to the value it had when it called the function.]" 1549 "[+0?Same as EXIT.]" 1550 "[+DEBUG?Executed before each simple command is executed but after " 1551 "the arguments are expanded.]" 1552 "[+ERR?Executed whenever \bset -e\b would cause the shell to exit.]" 1553 "[+KEYBD?Executed when a key is entered from a terminal device.]" 1554 "}" 1555 "[+?Signal names are case insensitive and the \bsig\b prefix is optional. " 1556 "Signals that were ignored on entry to a noninteractive shell cannot " 1557 "trapped or reset although doing so will not report an error. The " 1558 "use of signal numbers other than \b1\b, \b2\b, \b3\b, \b6\b, " 1559 "\b9\b, \b14\b, and \b15\b is not portable.]" 1560 "[+?Although \btrap\b is a special built-in, specifying a condition that " 1561 "the shell does not know about causes \btrap\b to exit with a " 1562 "non-zero exit status, but does not terminate the invoking shell.]" 1563 "[+?If no \aaction\a or \acondition\as are specified then all the current " 1564 "trap settings are written to standard output.]" 1565 "[p?Causes the current traps to be output in a format that can be processed " 1566 "as input to the shell to recreate the current traps.]" 1567 "\n" 1568 "\n[action condition ...]\n" 1569 "\n" 1570 "[+EXIT STATUS?]{" 1571 "[+0?Successful completion.]" 1572 "[+>0?An error occurred.]" 1573 "}" 1574 1575 "[+SEE ALSO?\bkill\b(1), \beval\b(1), \bsignal\b(3)]" 1576 ; 1577 1578 const char sh_opttypeset[] = 1579 "+[-1c?\n@(#)$Id: typeset (AT&T Research) 2008-08-04 $\n]" 1580 USAGE_LICENSE 1581 "[+NAME?\f?\f - declare or display variables with attributes]" 1582 "[+DESCRIPTION?Without the \b-f\b option, \b\f?\f\b sets, unsets, " 1583 "or displays attributes of variables as specified with the " 1584 "options. If the first option is specified with a \b-\b " 1585 "then the attributes are set for each of the given \aname\as. " 1586 "If the first option is specified with a \b+\b, then the specified " 1587 "attributes are unset. If \b=\b\avalue\a is specified value is " 1588 "assigned before the attributes are set.]" 1589 "[+?When \b\f?\f\b is called inside a function defined with the " 1590 "\bfunction\b reserved word, and \aname\a does not contain a " 1591 "\b.\b, then a local variable statically scoped to that function " 1592 "will be created.]" 1593 "[+?Not all option combinations are possible. For example, the numeric " 1594 "options \b-i\b, \b-E\b, and \b-F\b cannot be specified with " 1595 "the justification options \b-L\b, \b-R\b, and \b-Z\b.]" 1596 "[+?Note that the following preset aliases are set by the shell:]{" 1597 "[+compound?\b\f?\f -C\b.]" 1598 "[+float?\b\f?\f -lE\b.]" 1599 "[+functions?\b\f?\f -f\b.]" 1600 "[+integer?\b\f?\f -li\b.]" 1601 "[+nameref?\b\f?\f -n\b.]" 1602 "}" 1603 "[+?If no \aname\as are specified then variables that have the specified " 1604 "options are displayed. If the first option is specified with " 1605 "a leading \b-\b then the name and value of each variable is " 1606 "written to standard output. Otherwise, only the names are " 1607 "written. If no options are specified or just \b-p\b is " 1608 "specified, then the names and attributes of all variables that have " 1609 "attributes are written to standard output. When \b-f\b is specified, " 1610 "the names displayed will be function names.]" 1611 "[+?If \b-f\b is specified, then each \aname\a refers to a function " 1612 "and the only valid options are \b-u\b and \b-t\b. In this " 1613 "case no \b=\b\avalue\a can be specified.]" 1614 "[+?\b\f?\f\b is built-in to the shell as a declaration command so that " 1615 "field splitting and pathname expansion are not performed on " 1616 "the arguments. Tilde expansion occurs on \avalue\a.]" 1617 #if 1 1618 "[a]:?[type?Indexed array. This is the default. If \b[\b\atype\a\b]]\b is " 1619 "specified, each subscript is interpreted as a value of type \atype\a.]" 1620 #else 1621 "[a?Indexed array. this is the default.]" 1622 #endif 1623 "[b?Each \aname\a may contain binary data. Its value is the mime " 1624 "base64 encoding of the data. It can be used with \b-Z\b, " 1625 "to specify fixed sized fields.]" 1626 "[f?Each of the options and \aname\as refers to a function.]" 1627 "[i]#?[base:=10?An integer. \abase\a represents the arithmetic base " 1628 "from 2 to 64.]" 1629 "[l?Convert uppercase character to lowercase. Unsets \b-u\b attribute. When " 1630 "used with \b-i\b, \b-E\b, or \b-F\b indicates long variant.]" 1631 "[m?Move. The value is the name of a variable whose value will be " 1632 "moved to \aname\a. The orignal variable will be unset. Cannot be " 1633 "used with any other options.]" 1634 "[n?Name reference. The value is the name of a variable that \aname\a " 1635 "references. \aname\a cannot contain a \b.\b. Cannot be use with " 1636 "any other options.]" 1637 "[p?Causes the output to be in a format that can be used as input to the " 1638 "shell to recreate the attributes for variables.]" 1639 "[r?Enables readonly. Once enabled it cannot be disabled. See " 1640 "\breadonly\b(1).]" 1641 "[s?Used with \b-i\b to restrict integer size to short.]" 1642 "[t?When used with \b-f\b, enables tracing for each of the specified " 1643 "functions. Otherwise, \b-t\b is a user defined attribute and " 1644 "has no meaning to the shell.]" 1645 "[u?Without \b-f\b or \b-i\b, converts lowercase character to uppercase " 1646 "and unsets \b-l\b. With \b-f\b specifies that \aname\a is a function " 1647 "that hasn't been loaded yet. With \b-i\b specifies that the " 1648 "value will be displayed as an unsigned integer.]" 1649 "[x?Puts each \aname\a on the export list. See \bexport\b(1). \aname\a " 1650 "cannot contain a \b.\b.]" 1651 "[A?Associative array. Each \aname\a will converted to an associate " 1652 "array. If a variable already exists, the current value will " 1653 "become index \b0\b.]" 1654 "[C?Compound variable. Each \aname\a will be a compound variable. If " 1655 "\avalue\a names a compound variable it will be copied to \aname\a. " 1656 "Otherwise if the variable already exists, it will first be unset.]" 1657 "[E]#?[n:=10?Floating point number represented in scientific notation. " 1658 "\an\a specifies the number of significant figures when the " 1659 "value is expanded.]" 1660 "[F]#?[n:=10?Floating point. \an\a is the number of places after the " 1661 "decimal point when the value is expanded.]" 1662 "[H?Hostname mapping. Each \aname\a holds a native pathname. Assigning a " 1663 "UNIX format pathname will cause it to be converted to a pathname " 1664 "suitable for the current host. This has no effect when the " 1665 "native system is UNIX.]" 1666 "[L]#?[n?Left justify. If \an\a is given it represents the field width. If " 1667 "the \b-Z\b attribute is also specified, then leading zeros are " 1668 "stripped.]" 1669 "[R]#?[n?Right justify. If \an\a is given it represents the field width. If " 1670 "the \b-Z\b attribute is also specified, then zeros will " 1671 "be used as the fill character. Otherwise, spaces are used.]" 1672 "[X]#?[n:=2*sizeof(long long)?Floating point number represented in hexadecimal " 1673 "notation. \an\a specifies the number of significant figures when the " 1674 "value is expanded.]" 1675 1676 #ifdef SHOPT_TYPEDEF 1677 "[h]:[string?Used within a type definition to provide a help string " 1678 "for variable \aname\a. Otherwise, it is ignored.]" 1679 "[S?Used with a type definition to indicate that the variable is shared by " 1680 "each instance of the type. When used inside a function defined " 1681 "with the \bfunction\b reserved word, the specified variables " 1682 "will have function static scope. Otherwise, the variable is " 1683 "unset prior to processing the assignment list.]" 1684 #endif 1685 "[T]:[tname?\atname\a is the name of a type name given to each \aname\a.]" 1686 "[Z]#?[n?Zero fill. If \an\a is given it represents the field width.]" 1687 "\n" 1688 "\n[name[=value]...]\n" 1689 " -f [name...]\n" 1690 "\n" 1691 "[+EXIT STATUS?]{" 1692 "[+0?No errors occurred.]" 1693 "[+>0?An error occurred.]" 1694 "}" 1695 1696 "[+SEE ALSO?\breadonly\b(1), \bexport\b(1)]" 1697 ; 1698 1699 const char sh_optulimit[] = 1700 "[-1c?@(#)$Id: ulimit (AT&T Research) 2003-06-21 $\n]" 1701 USAGE_LICENSE 1702 "[+NAME?ulimit - set or display resource limits]" 1703 "[+DESCRIPTION?\bulimit\b sets or displays resource limits. These " 1704 "limits apply to the current process and to each child process " 1705 "created after the resource limit has been set. If \alimit\a " 1706 "is specified, the resource limit is set, otherwise, its current value " 1707 "is displayed on standard output.]" 1708 "[+?Increasing the limit for a resource usually requires special privileges. " 1709 "Some systems allow you to lower resource limits and later increase " 1710 "them. These are called soft limits. Once a hard limit is " 1711 "set the resource can not be increased.]" 1712 "[+?Different systems allow you to specify different resources and some " 1713 "restrict how much you can raise the limit of the resource.]" 1714 "[+?The value of \alimit\a depends on the unit of the resource listed " 1715 "for each resource. In addition, \alimit\a can be \bunlimited\b " 1716 "to indicate no limit for that resource.]" 1717 "[+?If you do not specify \b-H\b or \b-S\b, then \b-S\b is used for " 1718 "listing and both \b-S\b and \b-H\b are used for setting resources.]" 1719 "[+?If you do not specify any resource, the default is \b-f\b.]" 1720 "[H?A hard limit is set or displayed.]" 1721 "[S?A soft limit is set or displayed.]" 1722 "[a?Displays all current resource limits]" 1723 "\flimits\f" 1724 "\n" 1725 "\n[limit]\n" 1726 "\n" 1727 "[+EXIT STATUS?]{" 1728 "[+0?Successful completion.]" 1729 "[+>0?A request for a higher limit was rejected or an error occurred.]" 1730 "}" 1731 1732 "[+SEE ALSO?\bulimit\b(2), \bgetrlimit\b(2)]" 1733 ; 1734 1735 const char sh_optumask[] = 1736 "[-1c?\n@(#)$Id: umask (AT&T Research) 1999-04-07 $\n]" 1737 USAGE_LICENSE 1738 "[+NAME?umask - get or set the file creation mask]" 1739 "[+DESCRIPTION?\bumask\b sets the file creation mask of the current " 1740 "shell execution environment to the value specified by the " 1741 "\amask\a operand. This mask affects the file permission bits " 1742 "of subsequently created files. \amask\a can either be an " 1743 "octal number or a symbolic value as described in \bchmod\b(1). " 1744 "If a symbolic value is given, the new file creation mask is the " 1745 "complement of the result of applying \amask\a to the complement " 1746 "of the current file creation mask.]" 1747 "[+?If \amask\a is not specified, \bumask\b writes the value of the " 1748 "file creation mask for the current process to standard output.]" 1749 "[S?Causes the file creation mask to be written or treated as a symbolic value " 1750 "rather than an octal number.]" 1751 "\n" 1752 "\n[mask]\n" 1753 "\n" 1754 "[+EXIT STATUS?]{" 1755 "[+0?The file creation mask was successfully changed, or no " 1756 "\amask\a operand was supplied.]" 1757 "[+>0?An error occurred.]" 1758 "}" 1759 "[+SEE ALSO?\bchmod\b(1)]" 1760 ; 1761 const char sh_optuniverse[] = " [name]"; 1762 const char sh_optunset[] = 1763 "[-1c?\n@(#)$Id: unset (AT&T Research) 1999-07-07 $\n]" 1764 USAGE_LICENSE 1765 "[+NAME?unset - unset values and attributes of variables and functions]" 1766 "[+DESCRIPTION?For each \aname\a specified, \bunset\b unsets the variable, " 1767 "or function if \b-f\b is specified, from the current shell " 1768 "execution environment. Readonly variables cannot be unset.]" 1769 "[n?If \aname\a refers to variable that is a reference, the variable \aname\a " 1770 "will be unset rather than the variable it references. Otherwise, " 1771 "is is equivalent to \b-v\b.]" 1772 "[f?\aname\a refers to a function name and the shell will unset the " 1773 "function definition.]" 1774 "[v?\aname\a refers to a variable name and the shell will unset it and " 1775 "remove it from the environment. This is the default behavior.]" 1776 "\n" 1777 "\nname...\n" 1778 "\n" 1779 "[+EXIT STATUS?]{" 1780 "[+0?All \aname\as were successfully unset.]" 1781 "[+>0?One or more \aname\a operands could not be unset " 1782 "or an error occurred.]" 1783 "}" 1784 1785 "[+SEE ALSO?\btypeset\b(1)]" 1786 ; 1787 1788 const char sh_optunalias[] = 1789 "[-1c?\n@(#)$Id: unalias (AT&T Research) 1999-07-07 $\n]" 1790 USAGE_LICENSE 1791 "[+NAME?unalias - remove alias definitions]" 1792 "[+DESCRIPTION?\bunalias\b removes the definition of each named alias " 1793 "from the current shell execution environment, or all aliases if " 1794 "\b-a\b is specified. It will not affect any commands that " 1795 "have already been read and subsequently executed.]" 1796 "[a?Causes all alias definitions to be removed. \aname\a operands " 1797 "are optional and ignored in this case.]" 1798 "\n" 1799 "\nname...\n" 1800 "\n" 1801 "[+EXIT STATUS?]{" 1802 "[+0?Successful completion.]" 1803 "[+>0?\b-a\b was not specified and one or more \aname\a operands " 1804 "did not have an alias definition, or an error occurred.]" 1805 "}" 1806 1807 "[+SEE ALSO?\balias\b(1)]" 1808 ; 1809 1810 const char sh_optwait[] = 1811 "[-1c?\n@(#)$Id: wait (AT&T Research) 1999-06-17 $\n]" 1812 USAGE_LICENSE 1813 "[+NAME?wait - wait for process or job completion]" 1814 "[+DESCRIPTION?\bwait\b with no operands, waits until all jobs " 1815 "known to the invoking shell have terminated. If one or more " 1816 "\ajob\a operands are specified, \bwait\b waits until all of them " 1817 "have completed.]" 1818 "[+?Each \ajob\a can be specified as one of the following:]{" 1819 "[+\anumber\a?\anumber\a refers to a process id.]" 1820 "[+-\anumber\a?\anumber\a refers to a process group id.]" 1821 "[+%\anumber\a?\anumber\a refer to a job number.]" 1822 "[+%\astring\a?Refers to a job whose name begins with \astring\a.]" 1823 "[+%??\astring\a?Refers to a job whose name contains \astring\a.]" 1824 "[+%+ \bor\b %%?Refers to the current job.]" 1825 "[+%-?Refers to the previous job.]" 1826 "}" 1827 "[+?If one ore more \ajob\a operands is a process id or process group id " 1828 "not known by the current shell environment, \bwait\b treats each " 1829 "of them as if it were a process that exited with status 127.]" 1830 "\n" 1831 "\n[job ...]\n" 1832 "\n" 1833 "[+EXIT STATUS?If \await\a is invoked with one or more \ajob\as, and all of " 1834 "them have terminated or were not known by the invoking shell, " 1835 "the exit status of \bwait\b will be that of the last \ajob\a. " 1836 "Otherwise, it will be one of the following:]{" 1837 "[+0?\bwait\b utility was invoked with no operands and all " 1838 "processes known by the invoking process have terminated.]" 1839 "[+127?\ajob\a is a process id or process group id that is unknown " 1840 "to the current shell environment.]" 1841 "}" 1842 1843 "[+SEE ALSO?\bjobs\b(1), \bps\b(1)]" 1844 ; 1845 1846 #if SHOPT_FS_3D 1847 const char sh_optvpath[] = " [top] [base]"; 1848 const char sh_optvmap[] = " [dir] [list]"; 1849 #endif /* SHOPT_FS_3D */ 1850 1851 const char sh_optwhence[] = 1852 "[-1c?\n@(#)$Id: whence (AT&T Research) 2007-04-24 $\n]" 1853 USAGE_LICENSE 1854 "[+NAME?whence - locate a command and describe its type]" 1855 "[+DESCRIPTION?Without \b-v\b, \bwhence\b writes on standard output an " 1856 "absolute pathname, if any, corresponding to \aname\a based " 1857 "on the complete search order that the shell uses. If \aname\a " 1858 "is not found, then no output is produced.]" 1859 "[+?If \b-v\b is specified, the output will also contain information " 1860 "that indicates how the given \aname\a would be interpreted by " 1861 "the shell in the current execution environment.]" 1862 "[a?Displays all uses for each \aname\a rather than the first.]" 1863 "[f?Do not check for functions.]" 1864 "[p?Do not check to see if \aname\a is a reserved word, a built-in, " 1865 "an alias, or a function. This turns off the \b-v\b option.]" 1866 "[q?Quiet mode. Returns 0 if all arguments are built-ins, functions, or are " 1867 "programs found on the path.]" 1868 "[v?For each name you specify, the shell displays a line that indicates " 1869 "if that name is one of the following:]{" 1870 "[+?Reserved word]" 1871 "[+?Alias]" 1872 "[+?Built-in]" 1873 "[+?Undefined function]" 1874 "[+?Function]" 1875 "[+?Tracked alias]" 1876 "[+?Program]" 1877 "}" 1878 "\n" 1879 "\nname ...\n" 1880 "\n" 1881 "[+EXIT STATUS?]{" 1882 "[+0?Each \aname\a was found by the shell.]" 1883 "[+1?One or more \aname\as were not found by the shell.]" 1884 "[+>1?An error occurred.]" 1885 "}" 1886 1887 "[+SEE ALSO?\bcommand\b(1)]" 1888 ; 1889 1890 1891 const char e_alrm1[] = "alarm -r %s +%.3g\n"; 1892 const char e_alrm2[] = "alarm %s %.3f\n"; 1893 const char e_baddisc[] = "%s: invalid discipline function"; 1894 const char e_nospace[] = "out of memory"; 1895 const char e_nofork[] = "cannot fork"; 1896 const char e_nosignal[] = "%s: unknown signal name"; 1897 const char e_condition[] = "condition(s) required"; 1898 const char e_cneedsarg[] = "-c requires argument"; 1899