51 lines
977 B
C
51 lines
977 B
C
/* vi: set sw=4 ts=4: */
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/*
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* Which implementation for busybox
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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* Copyright (C) 2006 Gabriel Somlo <somlo at cmu.edu>
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*
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* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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*
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* Based on which from debianutils
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*/
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#include "libbb.h"
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int which_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int which_main(int argc, char **argv)
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{
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int status = EXIT_SUCCESS;
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char *p;
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if (argc <= 1 || argv[1][0] == '-') {
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bb_show_usage();
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}
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/* This matches what is seen on e.g. ubuntu
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* "which" there is a shell script */
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if (!getenv("PATH")) {
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putenv((char*)bb_PATH_root_path);
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}
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while (--argc > 0) {
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argv++;
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if (strchr(*argv, '/')) {
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if (execable_file(*argv)) {
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puts(*argv);
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continue;
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}
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} else {
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p = find_execable(*argv);
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if (p) {
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puts(p);
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free(p);
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continue;
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}
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}
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status = EXIT_FAILURE;
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}
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fflush_stdout_and_exit(status);
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}
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