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