2013-10-07 16:03:26 +00:00
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/* See LICENSE file for copyright and license details. */
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2014-11-13 18:54:28 +00:00
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#include <errno.h>
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2013-06-14 16:55:25 +00:00
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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2014-11-13 18:54:28 +00:00
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#include <unistd.h>
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2014-11-13 17:29:30 +00:00
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2013-06-14 16:55:25 +00:00
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#include "util.h"
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extern char **environ;
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2014-04-22 13:44:16 +00:00
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static void
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usage(void)
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{
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eprintf("usage: env [-i] [-u name]... [name=value]... [cmd [arg...]]\n");
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}
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2013-06-14 16:55:25 +00:00
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int
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2014-04-18 10:51:18 +00:00
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main(int argc, char *argv[])
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2013-06-14 16:55:25 +00:00
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{
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ARGBEGIN {
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case 'i':
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2013-07-18 19:28:08 +00:00
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if(environ)
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*environ = NULL;
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2013-06-14 16:55:25 +00:00
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break;
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case 'u':
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unsetenv(EARGF(usage()));
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break;
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default:
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usage();
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} ARGEND;
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2014-11-13 17:29:30 +00:00
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for (; *argv && strchr(*argv, '='); argv++)
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2013-06-14 16:55:25 +00:00
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putenv(*argv);
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2014-11-13 17:29:30 +00:00
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if (*argv) {
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2013-06-14 16:55:25 +00:00
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execvp(*argv, argv);
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2014-06-01 12:59:47 +00:00
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enprintf(127 - (errno != EEXIST), "env: '%s':", *argv);
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2013-06-14 16:55:25 +00:00
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}
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2014-11-13 17:29:30 +00:00
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while (environ && *environ)
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2013-07-20 05:27:42 +00:00
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printf("%s\n", *environ++);
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2013-06-14 16:55:25 +00:00
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2014-10-02 22:46:04 +00:00
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return 0;
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2013-06-14 16:55:25 +00:00
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}
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