perl script to check whether folder contains any files

Hi - I have a requirement where I want to find whether any files are in the given folder.
So I listed all the folder paths in a text file and want to send that file as input to perl script
now perl script reads each line and gets each folder path and should check whether it contains any files
if it contains any files then it should print that folder path into the output file.

input file like below
C:\test\folder1
C:\test\folder2

use strict;
use warnings;
use Pod::Usage;
use Getopt::Long;
use Time::Piece;

my $helpme = 0;
my $man = 0;

my $inputFileName = 'C:\\temp\\folderlist.txt';
my $outputFileName = 'C:\\temp\\outputfolderlist.txt';

my $errorcode = 0;
my $DEBUG=0;

if(exists $ENV{DEBUG}) {
	$DEBUG = ($ENV{DEBUG} eq "") ? 0 : $ENV{DEBUG};
}

GetOptions('help' => \$helpme, 'man' => \$man, 'infile=s' => \$inputFileName, 'outfile=s' => \$outputFileName) or pod2usage(2);

pod2usage(1) if $helpme;
pod2usage(-verbose => 2) if $man;

die 'No input file name specified!' unless $inputFileName;
die 'No output file name specified!' unless $outputFileName;

open(INFILE, '<', $inputFileName) or die "Could not open input file: $!";
open(OUTFILE, '>', $outputFileName) or die "Could not open/create output file: $!";

while(<INFILE>) {
	chomp;
	
	
}

close INFILE;
close OUTFILE;

exit $errorcode;
      

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shragiAsked:
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FishMongerCommented:
You can use the glob function to check for files.

Something like this:
while( my $dir = <INFILE>) {
	chomp $dir;
	if (glob "$dir/*") {
            # print dir path to your file.
        }
}

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You can also use the File::Glob module.
jmcgOwnerCommented:
I'm trying to think of a way to do this that uses minimum resources...thinking about opendir and readdir. Globbing certainly works, but at what cost? And does it do the right thing for hidden files (names beginning with .)?

Perhaps better would be to have the script that prepares the input list to simply list all the file pathnames; that would make the answer to this question just a matter of text processing rather than an exercise for file system operations.
FishMongerCommented:
The glob function will return hidden files as well.
if (glob "$dir/. $dir/*") {

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Since it's being called in scalar context within a conditional, it will be very efficient because it's only returning 1 value which is either undef or the first directory entry.

One caveat with globing hidden files is that it returns the . and .. dirs which would need to be taken into account.  One way to handle it would be to filter the glob via a grep statement.
wilcoxonCommented:
If you wanted to use readdir, it would look like this...
while( my $dir = <INFILE>) {
	chomp $dir;
        opendir DIR, $dir or die "could not open dir $dir: $!";
        if (grep { $_ ne '.' and $_ ne '..' } readdir DIR) {
            # print dir path to your file.
        }
        closedir DIR;
}

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The grep above could also be used with the glob as FishMonger suggested.

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shragiAuthor Commented:
Thanks FishMonger and wilcoxon.

I used the wilcoxon script to get the result that I want, I have another question but I will open another ticket for that.

Thanks
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