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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 static const char copyright[] =
32 "@(#) Copyright (c) 1988, 1993, 1994\n\
33 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94";
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
54 extern char **environ;
58 static void usage(void);
61 main(int argc, char **argv)
63 char *altpath, **ep, *p, **parg;
70 while ((ch = getopt(argc, argv, "-iP:S:u:v")) != -1)
77 altpath = strdup(optarg);
81 * The -S option, for "split string on spaces, with
82 * support for some simple substitutions"...
84 split_spaces(optarg, &optind, &argc, &argv);
88 fprintf(stderr, "#env unset:\t%s\n", optarg);
89 rtrn = unsetenv(optarg);
91 err(EXIT_FAILURE, "unsetenv %s", optarg);
95 if (env_verbosity > 1)
96 fprintf(stderr, "#env verbosity now at %d\n",
107 fprintf(stderr, "#env clearing environ\n");
109 for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv) {
111 fprintf(stderr, "#env setenv:\t%s\n", *argv);
113 rtrn = setenv(*argv, p + 1, 1);
116 err(EXIT_FAILURE, "setenv %s", *argv);
120 search_paths(altpath, argv);
122 fprintf(stderr, "#env executing:\t%s\n", *argv);
123 for (parg = argv, argc = 0; *parg; parg++, argc++)
124 fprintf(stderr, "#env arg[%d]=\t'%s'\n",
126 if (env_verbosity > 1)
130 err(errno == ENOENT ? 127 : 126, "%s", *argv);
132 for (ep = environ; *ep; ep++)
133 (void)printf("%s\n", *ep);
140 (void)fprintf(stderr,
141 "usage: env [-iv] [-P utilpath] [-S string] [-u name]\n"
142 " [name=value ...] [utility [argument ...]]\n");