19b50d902SRodney W. Grimes /* 29b50d902SRodney W. Grimes * Copyright (c) 1988, 1993, 1994 39b50d902SRodney W. Grimes * The Regents of the University of California. All rights reserved. 49b50d902SRodney W. Grimes * 59b50d902SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 69b50d902SRodney W. Grimes * modification, are permitted provided that the following conditions 79b50d902SRodney W. Grimes * are met: 89b50d902SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 99b50d902SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 109b50d902SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 119b50d902SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 129b50d902SRodney W. Grimes * documentation and/or other materials provided with the distribution. 139b50d902SRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 149b50d902SRodney W. Grimes * must display the following acknowledgement: 159b50d902SRodney W. Grimes * This product includes software developed by the University of 169b50d902SRodney W. Grimes * California, Berkeley and its contributors. 179b50d902SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 189b50d902SRodney W. Grimes * may be used to endorse or promote products derived from this software 199b50d902SRodney W. Grimes * without specific prior written permission. 209b50d902SRodney W. Grimes * 219b50d902SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 229b50d902SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 239b50d902SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 249b50d902SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 259b50d902SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 269b50d902SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 279b50d902SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 289b50d902SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 299b50d902SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 309b50d902SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 319b50d902SRodney W. Grimes * SUCH DAMAGE. 329b50d902SRodney W. Grimes */ 339b50d902SRodney W. Grimes 349b50d902SRodney W. Grimes #ifndef lint 3506469209SMike Barcroft static const char copyright[] = 369b50d902SRodney W. Grimes "@(#) Copyright (c) 1988, 1993, 1994\n\ 379b50d902SRodney W. Grimes The Regents of the University of California. All rights reserved.\n"; 389b50d902SRodney W. Grimes #endif /* not lint */ 399b50d902SRodney W. Grimes 4006469209SMike Barcroft #if 0 419b50d902SRodney W. Grimes #ifndef lint 42603460a7SMike Barcroft static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94"; 439b50d902SRodney W. Grimes #endif /* not lint */ 44603460a7SMike Barcroft #endif 45603460a7SMike Barcroft 46603460a7SMike Barcroft #include <sys/cdefs.h> 47603460a7SMike Barcroft __FBSDID("$FreeBSD$"); 489b50d902SRodney W. Grimes 499b50d902SRodney W. Grimes #include <err.h> 50603460a7SMike Barcroft #include <errno.h> 519b50d902SRodney W. Grimes #include <stdio.h> 529b50d902SRodney W. Grimes #include <string.h> 539b50d902SRodney W. Grimes #include <stdlib.h> 549b50d902SRodney W. Grimes #include <unistd.h> 559b50d902SRodney W. Grimes 569b50d902SRodney W. Grimes extern char **environ; 579b50d902SRodney W. Grimes 58f66e378bSGarance A Drosehn int env_verbosity; 59f66e378bSGarance A Drosehn 60f1bb2cd2SWarner Losh static void usage(void); 61d98fe205SPhilippe Charnier 629b50d902SRodney W. Grimes int 63f4ac32deSDavid Malone main(int argc, char **argv) 649b50d902SRodney W. Grimes { 65f66e378bSGarance A Drosehn char **ep, *p, **parg; 669b50d902SRodney W. Grimes char *cleanenv[1]; 679b50d902SRodney W. Grimes int ch; 689b50d902SRodney W. Grimes 69f66e378bSGarance A Drosehn while ((ch = getopt(argc, argv, "-iv")) != -1) 709b50d902SRodney W. Grimes switch(ch) { 719b50d902SRodney W. Grimes case '-': 7285ab7ba1SSheldon Hearn case 'i': 739b50d902SRodney W. Grimes environ = cleanenv; 749b50d902SRodney W. Grimes cleanenv[0] = NULL; 75f66e378bSGarance A Drosehn if (env_verbosity) 76f66e378bSGarance A Drosehn fprintf(stderr, "#env clearing environ\n"); 77f66e378bSGarance A Drosehn break; 78f66e378bSGarance A Drosehn case 'v': 79f66e378bSGarance A Drosehn env_verbosity++; 80f66e378bSGarance A Drosehn if (env_verbosity > 1) 81f66e378bSGarance A Drosehn fprintf(stderr, "#env verbosity now at %d\n", 82f66e378bSGarance A Drosehn env_verbosity); 839b50d902SRodney W. Grimes break; 849b50d902SRodney W. Grimes case '?': 859b50d902SRodney W. Grimes default: 86d98fe205SPhilippe Charnier usage(); 879b50d902SRodney W. Grimes } 88f66e378bSGarance A Drosehn for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv) { 89f66e378bSGarance A Drosehn if (env_verbosity) 90f66e378bSGarance A Drosehn fprintf(stderr, "#env setenv:\t%s\n", *argv); 919b50d902SRodney W. Grimes (void)setenv(*argv, ++p, 1); 92f66e378bSGarance A Drosehn } 939b50d902SRodney W. Grimes if (*argv) { 94f66e378bSGarance A Drosehn if (env_verbosity) { 95f66e378bSGarance A Drosehn fprintf(stderr, "#env executing:\t%s\n", *argv); 96f66e378bSGarance A Drosehn for (parg = argv, argc = 0; *parg; parg++, argc++) 97f66e378bSGarance A Drosehn fprintf(stderr, "#env arg[%d]=\t'%s'\n", 98f66e378bSGarance A Drosehn argc, *parg); 99f66e378bSGarance A Drosehn if (env_verbosity > 1) 100f66e378bSGarance A Drosehn sleep(1); 101f66e378bSGarance A Drosehn } 1029b50d902SRodney W. Grimes execvp(*argv, argv); 103603460a7SMike Barcroft err(errno == ENOENT ? 127 : 126, "%s", *argv); 1049b50d902SRodney W. Grimes } 1059b50d902SRodney W. Grimes for (ep = environ; *ep; ep++) 1069b50d902SRodney W. Grimes (void)printf("%s\n", *ep); 1079b50d902SRodney W. Grimes exit(0); 1089b50d902SRodney W. Grimes } 109d98fe205SPhilippe Charnier 110d98fe205SPhilippe Charnier static void 111f4ac32deSDavid Malone usage(void) 112d98fe205SPhilippe Charnier { 113d98fe205SPhilippe Charnier (void)fprintf(stderr, 114f66e378bSGarance A Drosehn "usage: env [-iv] [name=value ...] [utility [argument ...]]\n"); 115d98fe205SPhilippe Charnier exit(1); 116d98fe205SPhilippe Charnier } 117