1/* vi: set sw=4 ts=4: */
2/*
3 * Which implementation for busybox
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 * Copyright (C) 2006 Gabriel Somlo <somlo at cmu.edu>
7 *
8 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
9 *
10 * Based on which from debianutils
11 */
12
13#include "libbb.h"
14
15int which_main(int argc, char **argv);
16int which_main(int argc, char **argv)
17{
18	int status = EXIT_SUCCESS;
19	char *p;
20
21	if (argc <= 1 || argv[1][0] == '-') {
22		bb_show_usage();
23	}
24
25/* We shouldn't do this. Ever. Not our business.
26	if (!getenv("PATH")) {
27		putenv((char*)bb_PATH_root_path);
28	}
29*/
30
31	while (--argc > 0) {
32		argv++;
33		if (strchr(*argv, '/')) {
34			if (execable_file(*argv)) {
35				puts(*argv);
36				continue;
37			}
38		} else {
39			p = find_execable(*argv);
40			if (p) {
41				puts(p);
42				free(p);
43				continue;
44			}
45		}
46		status = EXIT_FAILURE;
47	}
48
49	fflush_stdout_and_exit(status);
50}
51