2 * Copyright (c) 1988, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static const char copyright[] =
36 "@(#) Copyright (c) 1988, 1993, 1994\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94";
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
58 extern char **environ;
62 static void usage(void);
65 main(int argc, char **argv)
67 char *altpath, **ep, *p, **parg;
74 while ((ch = getopt(argc, argv, "-iP:S:u:v")) != -1)
81 altpath = strdup(optarg);
85 * The -S option, for "split string on spaces, with
86 * support for some simple substitutions"...
88 split_spaces(optarg, &optind, &argc, &argv);
92 fprintf(stderr, "#env unset:\t%s\n", optarg);
93 rtrn = unsetenv(optarg);
95 err(EXIT_FAILURE, "unsetenv %s", optarg);
99 if (env_verbosity > 1)
100 fprintf(stderr, "#env verbosity now at %d\n",
111 fprintf(stderr, "#env clearing environ\n");
113 for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv) {
115 fprintf(stderr, "#env setenv:\t%s\n", *argv);
117 rtrn = setenv(*argv, p + 1, 1);
120 err(EXIT_FAILURE, "setenv %s", *argv);
124 search_paths(altpath, argv);
126 fprintf(stderr, "#env executing:\t%s\n", *argv);
127 for (parg = argv, argc = 0; *parg; parg++, argc++)
128 fprintf(stderr, "#env arg[%d]=\t'%s'\n",
130 if (env_verbosity > 1)
134 err(errno == ENOENT ? 127 : 126, "%s", *argv);
136 for (ep = environ; *ep; ep++)
137 (void)printf("%s\n", *ep);
144 (void)fprintf(stderr,
145 "usage: env [-iv] [-P utilpath] [-S string] [-u name]\n"
146 " [name=value ...] [utility [argument ...]]\n");