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/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "util.h"
extern char **environ;
static void
usage(void)
{
eprintf("usage: %s [-i] [-u var] ... [var=value] ... [cmd [arg ...]]\n", argv0);
}
int
main(int argc, char *argv[])
{
int savederrno;
ARGBEGIN {
case 'i':
*environ = NULL;
break;
case 'u':
if (unsetenv(EARGF(usage())) < 0)
eprintf("unsetenv:");
break;
default:
usage();
} ARGEND
for (; *argv && strchr(*argv, '='); argc--, argv++)
putenv(*argv);
if (*argv) {
execvp(*argv, argv);
savederrno = errno;
weprintf("execvp %s:", *argv);
_exit(126 + (savederrno == ENOENT));
}
for (; *environ; environ++)
puts(*environ);
return fshut(stdout, "<stdout>");
}