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61 lines
2.1 KiB
Perl
Executable File
61 lines
2.1 KiB
Perl
Executable File
#!/usr/bin/perl
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#
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# Copyright (c) 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
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# All rights reserved.
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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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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $Id: which.pl,v 1.12 1998/01/02 13:46:25 helbig Exp $
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$all = $silent = $found = 0;
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@path = split(/:/, $ENV{'PATH'});
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if ($ENV{'PATH'} =~ /:$/) {
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$#path = $#path + 1;
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$path[$#path] = "";
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}
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if ($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: which [-a] [-s] program ...\n";
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}
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foreach $prog (@ARGV) {
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if ("$prog" =~ '/' && -x "$prog" && -f "$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 $e (@path) {
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$e = "." if !$e;
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if (-x "$e/$prog" && -f "$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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