guaranteed or your money back!

#!/usr/bin/perl

use CGI;

#change this to the full pathname to the bottom of the dir structure:
my $dir = "/tmp/";

print "Content-type: text/html\n\n";
my $cgiin = CGI->new;
my $letter = $cgiin->param('letter');

if (($letter eq "") && ($ARGV[0] =~ /[\w|\.]/)) {
	$letter = $ARGV[0];
	print "Running from the command line, looking for things that start with $letter\n";
}
if ($letter !~ /[\w|\.]/) {
	print "<h2>Please specify a valid letter</h2>";
	die "Invalid letter given";
}

my @errors;
#my $givendir = $ARGV[0];
#if ($givendir eq "") {
#	$givendir = ".";
#}
opendir('FLIST', "$dir");
my @dirs = readdir('FLIST');
closedir('FLIST');
while(@dirs) {
	my $workdir = shift(@dirs);
#	print "Checking $workdir\n";
	while(($workdir eq '.') || ($workdir eq '..')) {
#		print "NOT reading $workdir since its a trick!\n";
		$workdir = shift(@dirs);
	}
	my $oldworkdir = $workdir;
	$workdir = $dir . $workdir;
#	print "Opening $workdir... ";
	opendir('CURDIR', "$workdir");
	my @prefilelist = readdir('CURDIR');
	closedir('CURDIR');
#	print "Found this: @prefilelist\n";
	my @filelist;	
	while(@prefilelist) {
		my $workline = shift(@prefilelist);
		if (($workline ne '.') && ($workline ne '..')) {
			push(@filelist, "$workline");
#			print "$workline seems cools!\n";
		} else {
#			print "NOT reading $workline inside $workdir, since its a trap!\n";
		}
	}
	my $numfiles = @filelist;
	if ($numfiles != 1) {
		push(@errors, "in $workdir: expected 1 file, found $numfiles");
#		print "No way... Too many files in $workdir, just gonna ignore it\n";
	} else {
		my @firstletter = split(//, $oldworkdir);
		my $uc = uc($firstletter[0]);
		my $lc = lc($firstletter[0]);
#		print "uc is $uc, and lc is $lc\n";
		if (($uc eq $letter) || ($lc eq $letter)) {
			print "<a href=\"/cgi-bin/download.pl?filename=$oldworkdir\">$workdir</a><br />\n";
		} else {
#			print "Not matching $workdir because it doesn't start with a $letter<br />\n";
		}
		if (($letter eq '.') && ($oldworkdir =~ /^\d/)) {
			print "<a href=\"/cgi-bin/download.pl?filename=$workdir\">$workdir</a><br />\n";
		}
	}
}
#my $numerrors = @errors;
#if ($numerrors != 0) {
#	print "WARNING: $numerrors reported errors:\n";
#}
#while(@errors) {
#	my $errorline = shift(@errors);
#	print "$errorline\n";
#}