65 lines
2.3 KiB
Perl
Executable File
65 lines
2.3 KiB
Perl
Executable File
#!/usr/bin/perl
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#
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# Copyright (C) 1995, Wolfram Schneider <wosch@cs.tu-berlin.de>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. All advertising materials mentioning features or use of this software
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# must display the following acknowledgement:
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# This product includes software developed by Wolfram Schneider
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# and the FreeBSD Project.
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# 4. Neither the name of the University nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE CONTRIBUTOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# [whew!]
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#
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# $Id: which.pl,v 1.5 1995/07/31 04:22:07 asami Exp $
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$all = 0;
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$silent = 0;
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$found = 0;
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@path = split(/:/, $ENV{'PATH'});
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if ($ARGV[0] eq "-a") {
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$all = 1; shift @ARGV;
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} elsif ($ARGV[0] eq "-s") {
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$silent = 1; shift @ARGV;
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} elsif ($ARGV[0] =~ /^-(h|help|\?)$/) {
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die "usage:\n\twhich [-a] [-s] program ...\n";
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}
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foreach $prog (@ARGV) {
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if ("$prog" =~ '/' && -x "$prog") {
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print "$prog\n" unless $silent;
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$found = 1;
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} else {
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foreach $e (@path) {
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if (-x "$e/$prog") {
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print "$e/$prog\n" unless $silent;
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$found = 1;
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last unless $all;
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}
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}
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}
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}
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exit (!$found);
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