1************************************************************************** 2************************************************************************** 3** ** 4** The FreeBSD Project has chosen to redistribute and modify Less under ** 5** the 'Less License' (as described in the 'LICENSE' file). ** 6** ** 7************************************************************************** 8************************************************************************** 9 10 Less, version 563 11 12 This is the distribution of less, version 563, released 13 Jun 2020. 13 This program is part of the GNU project (http://www.gnu.org). 14 15 This program is free software. You may redistribute it and/or 16 modify it under the terms of either: 17 18 1. The GNU General Public License, as published by the Free 19 Software Foundation; either version 3, or (at your option) any 20 later version. A copy of this license is in the file COPYING. 21 or 22 2. The Less License, in the file LICENSE. 23 24 Please report any problems to bug-less@gnu.org. 25 See http://www.greenwoodsoftware.com/less for the latest info. 26 Source repository is at https://github.com/gwsw/less.git. 27 28========================================================================= 29 30This is the distribution of "less", a paginator similar to "more" or "pg". 31 32The formatted manual page is in less.man. 33The manual page nroff source is in less.nro. 34Major changes made since the last posted version are in NEWS. 35 36======================================================================= 37PRE-INSTALLATION (when using git) 38 39If you are building from a clone of a git repository, 40type "make -f Makefile.aut". 41If you are building from a numbered release package (a tar or zip file 42with a name like less-999.tar.gz or less-999.zip), you should skip this step. 43 44======================================================================= 45INSTALLATION (Unix systems only): 46 471. Move the distributed source to its own directory and unpack it, 48 if you have not already done so. 49 502. Type "sh configure". 51 This will generate a Makefile and a defines.h. 52 Warning: if you have a GNU sed, make sure it is version 2.05 or later. 53 54 The file INSTALL describes the usage of the configure program in 55 general. In addition, these options to configure are supported: 56 57 --with-editor=program 58 Specifies the default editor program used by the "v" command. 59 The default is "vi". 60 61 --with-regex=lib 62 Specifies the regular expression library used by less for pattern 63 matching. The default is "auto", which means the configure program 64 finds a regular expression library automatically. Other values are: 65 gnu Use the GNU regex library. 66 pcre Use the PCRE library. 67 pcre2 Use the PCRE2 library. 68 posix Use the POSIX-compatible regcomp. 69 regcmp Use the regcmp library. 70 re_comp Use the re_comp library. 71 regcomp Use the V8-compatible regcomp. 72 regcomp-local Use Henry Spencer's V8-compatible regcomp 73 (source is supplied with less). 74 none No regular expressions, only simple string matching. 75 76 --with-secure 77 Builds a "secure" version of less, with some features disabled 78 to prevent users from viewing other files, accessing shell 79 commands, etc. 80 81 823. It is a good idea to look over the generated Makefile and defines.h 83 and make sure they look ok. If you know of any peculiarities of 84 your system that configure might not have detected, you may fix the 85 Makefile now. Take particular notice of the list of "terminal" 86 libraries in the LIBS definition in the Makefile; these may need 87 to be edited. The terminal libraries will be some subset of 88 -lncurses -lcurses -ltermcap -ltermlib 89 90 If you wish, you may edit defines.h to remove some optional features. 91 If you choose not to include some features in your version, you may 92 wish to edit the manual page "less.nro" and the help page "less.hlp" 93 to remove the descriptions of the features which you are removing. 94 If you edit less.hlp, you should run "make -f Makefile.aut help.c". 95 964. Type "make" and watch the fun. 97 985. If the make succeeds, it will generate the programs "less", 99 "lesskey" and "lessecho" in your current directory. Test the 100 generated programs. 101 1026. When satisfied that it works, if you wish to install it 103 in a public place, type "make install". 104 105 The default install destinations are: 106 Executables (less, lesskey, lessecho) in /usr/local/bin 107 Documentation (less.nro, lesskey.nro) in /usr/local/man/man1 108 If you want to install any of these files elsewhere, define 109 bindir and/or mandir to the appropriate directories. 110 111If you have any problems building or running "less", suggestions, 112complaints, etc., you may mail to bug-less@gnu.org. 113 114Note to hackers: comments noting possible improvements are enclosed 115in double curly brackets {{ like this }}. 116 117(Note that the above note was originally written at a time when 118"hackers" most commonly meant "enthusiastic and dedicated computer 119programmers", not "persons who attempt to circumvent computer security".) 120 121 122 123======================================================================= 124INSTALLATION (MS-DOS systems only, 125 with Microsoft C, Borland C, or DJGPP) 126 1271. Move the distributed source to its own directory. 128 Depending on your compiler, you may need to convert the source 129 to have CR-LF rather than LF as line terminators. 130 1312. If you are using Microsoft C, rename MAKEFILE.DSU to MAKEFILE. 132 If you are using Borland C, rename MAKEFILE.DSB to MAKEFILE. 133 If you are using DJGPP, rename MAKEFILE.DSG to MAKEFILE. 134 1353. Look at MAKEFILE to make sure that the definitions for CC and LIBDIR 136 are correct. CC should be the name of your C compiler and 137 LIBDIR should be the directory where the C libraries reside (for 138 Microsoft C only). If these definitions need to be changed, you can 139 either modify the definitions directly in MAKEFILE, or set your 140 environment variables CC and/or LIBDIR to override the definitions 141 in MAKEFILE. 142 1434. If you wish, you may edit DEFINES.DS to remove some optional features. 144 If you choose not to include some features in your version, you may 145 wish to edit the manual page LESS.MAN and the help page HELP.C 146 to remove the descriptions of the features which you are removing. 147 1485. Run your "make" program and watch the fun. 149 If your "make" requires a flag to import environment variables, 150 you should use that flag. 151 If your compiler runs out of memory, try running "make -n >cmds.bat" 152 and then run cmds.bat. 153 1546. If the make succeeds, it will generate the programs "LESS.EXE" and 155 "LESSKEY.EXE" in your current directory. Test the generated programs. 156 1577. When satisfied that it works, you may wish to install LESS.EXE and 158 LESSKEY.EXE in a directory which is included in your PATH. 159 160 161 162======================================================================= 163INSTALLATION (Windows-95, Windows-98 and Windows-NT systems only, 164 with Borland C or Microsoft Visual C++) 165 1661. Move the distributed source to its own directory. 167 1682. If you are using Borland C, rename Makefile.wnb to Makefile. 169 If you are using Microsoft Visual C++, rename Makefile.wnm to Makefile. 170 1713. Check the Makefile to make sure the definitions look ok. 172 1734. If you wish, you may edit defines.wn to remove some optional features. 174 If you choose not to include some features in your version, you may 175 wish to edit the manual page less.man and the help page help.c 176 to remove the descriptions of the features which you are removing. 177 1785. Type "make" and watch the fun. 179 1806. If the make succeeds, it will generate the programs "less.exe" and 181 "lesskey.exe" in your current directory. Test the generated programs. 182 1837. When satisfied that it works, if you wish to install it 184 in a public place, type "make install". 185 See step 6 of the Unix installation instructions for details 186 on how to change the default installation directories. 187 188 189 190======================================================================= 191INSTALLATION (OS/2 systems only, 192 with EMX C) 193 1941. Move the distributed source to its own directory. 195 1962. Rename Makefile.o2e to Makefile. 197 1983. Check the Makefile to make sure the definitions look ok. 199 2004. If you wish, you may edit defines.o2 to remove some optional features. 201 If you choose not to include some features in your version, you may 202 wish to edit the manual page less.man and the help page help.c 203 to remove the descriptions of the features which you are removing. 204 2055. Type "make" and watch the fun. 206 2076. If the make succeeds, it will generate the programs "less.exe" and 208 "lesskey.exe" in your current directory. Test the generated programs. 209 2107. Make sure you have the emx runtime installed. You need the emx DLLs 211 emx.dll and emxlibcs.dll and also the termcap database, termcap.dat. 212 Make sure you have termcap.dat either in the default location or 213 somewhere in a directory listed in the PATH or INIT environment 214 variables. 215 2168. When satisfied that it works, you may wish to install less.exe, 217 lesskey.exe and scrsize.exe in a directory which is included in 218 your PATH. scrsize.exe is required only if you use a terminal 219 emulator such as xterm or rxvt. 220 221 222 223======================================================================= 224INSTALLATION (OS-9 systems only, 225 with Microware C or Ultra C) 226 2271. Move the distributed source to its own directory. 228 2292. If you are using Microware C, rename Makefile.o9c to Makefile. 230 If you are using Ultra C, rename Makefile.o9u to Makefile. 231 2323. Check the Makefile to make sure the definitions look ok. 233 2344. If you wish, you may edit defines.o9 to remove some optional features. 235 If you choose not to include some features in your version, you may 236 wish to edit the manual page less.man and the help page help.c 237 to remove the descriptions of the features which you are removing. 238 2395. Type "dmake" and watch the fun. 240 The standard OS-9 "make" will probably not work. If you don't 241 have dmake, you can get a copy from os9archive.rtsi.com. 242 2436. If the make succeeds, it will generate the programs "less" and 244 "lesskey" in your current directory. Test the generated programs. 245 2467. When satisfied that it works, if you wish to install it 247 in a public place, type "dmake install". 248 See step 6 of the Unix installation instructions for details 249 on how to change the default installation directories. 250 251======================================================================= 252ACKNOWLEDGMENTS: 253 Some versions of the less distribution are packaged using 254 Info-ZIP's compression utility. 255 Info-ZIP's software is free and can be obtained as source 256 code or executables from various anonymous-ftp sites, 257 including ftp.uu.net:/pub/archiving/zip. 258