100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
/*
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* Copyright (c) 1988, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1988, 1993, 1994\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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/*static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94";*/
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__RCSID("$NetBSD: env.c,v 1.20 2010/11/16 02:53:49 christos Exp $");
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#endif /* not lint */
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#include <err.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <locale.h>
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#include <errno.h>
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static void usage(void) __attribute__((__noreturn__));
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extern char **environ;
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int
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main(int argc, char **argv)
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{
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char **ep;
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char *cleanenv[1];
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int ch;
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setprogname(*argv);
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(void)setlocale(LC_ALL, "");
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while ((ch = getopt(argc, argv, "-i")) != -1)
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switch((char)ch) {
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case '-': /* obsolete */
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case 'i':
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environ = cleanenv;
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cleanenv[0] = NULL;
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break;
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case '?':
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default:
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usage();
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}
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for (argv += optind; *argv && strchr(*argv, '=') != NULL; ++argv)
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(void)putenv(*argv);
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if (*argv) {
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/* return 127 if the command to be run could not be found; 126
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if the command was found but could not be invoked */
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(void)execvp(*argv, argv);
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err((errno == ENOENT) ? 127 : 126, "%s", *argv);
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/* NOTREACHED */
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}
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for (ep = environ; *ep; ep++)
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(void)printf("%s\n", *ep);
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exit(0);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr, "Usage: %s [-i] [name=value ...] [command]\n",
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getprogname());
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exit(1);
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}
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