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 359b50d902SRodney W. Grimes static 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 409b50d902SRodney W. Grimes #ifndef lint 419b50d902SRodney W. Grimes static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94"; 429b50d902SRodney W. Grimes #endif /* not lint */ 439b50d902SRodney W. Grimes 449b50d902SRodney W. Grimes #include <err.h> 459b50d902SRodney W. Grimes #include <stdio.h> 469b50d902SRodney W. Grimes #include <string.h> 479b50d902SRodney W. Grimes #include <stdlib.h> 489b50d902SRodney W. Grimes #include <unistd.h> 499b50d902SRodney W. Grimes 509b50d902SRodney W. Grimes extern char **environ; 519b50d902SRodney W. Grimes 52d98fe205SPhilippe Charnier static void usage __P((void)); 53d98fe205SPhilippe Charnier 549b50d902SRodney W. Grimes int 559b50d902SRodney W. Grimes main(argc, argv) 569b50d902SRodney W. Grimes int argc; 579b50d902SRodney W. Grimes char **argv; 589b50d902SRodney W. Grimes { 599b50d902SRodney W. Grimes char **ep, *p; 609b50d902SRodney W. Grimes char *cleanenv[1]; 619b50d902SRodney W. Grimes int ch; 629b50d902SRodney W. Grimes 631c8af878SWarner Losh while ((ch = getopt(argc, argv, "-")) != -1) 649b50d902SRodney W. Grimes switch(ch) { 659b50d902SRodney W. Grimes case '-': 669b50d902SRodney W. Grimes environ = cleanenv; 679b50d902SRodney W. Grimes cleanenv[0] = NULL; 689b50d902SRodney W. Grimes break; 699b50d902SRodney W. Grimes case '?': 709b50d902SRodney W. Grimes default: 71d98fe205SPhilippe Charnier usage(); 729b50d902SRodney W. Grimes } 739b50d902SRodney W. Grimes for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv) 749b50d902SRodney W. Grimes (void)setenv(*argv, ++p, 1); 759b50d902SRodney W. Grimes if (*argv) { 769b50d902SRodney W. Grimes execvp(*argv, argv); 779b50d902SRodney W. Grimes err(1, "%s", *argv); 789b50d902SRodney W. Grimes } 799b50d902SRodney W. Grimes for (ep = environ; *ep; ep++) 809b50d902SRodney W. Grimes (void)printf("%s\n", *ep); 819b50d902SRodney W. Grimes exit(0); 829b50d902SRodney W. Grimes } 83d98fe205SPhilippe Charnier 84d98fe205SPhilippe Charnier static void 85d98fe205SPhilippe Charnier usage() 86d98fe205SPhilippe Charnier { 87d98fe205SPhilippe Charnier (void)fprintf(stderr, 88d98fe205SPhilippe Charnier "usage: env [-] [name=value ...] [command]\n"); 89d98fe205SPhilippe Charnier exit(1); 90d98fe205SPhilippe Charnier } 91