You can try this:

I modified your OP using your description below:

use warnings; use strict; use Cwd qw(abs_path); die "Please give the directory to the file on CLI" unless @ARGV == 2; my ( $dir, $file_to_reference ) = @ARGV; my @ds; open my $fh, '<', $file_to_reference or die "can't open file: $!"; while (<$fh>) { chomp; push @ds, $_; } close $fh or die "can't close file: $!"; $dir = abs_path($dir); chdir $dir or die "No such directory: $!"; my @result; opendir my $dh, $dir or die "can't open dir: $!"; while ( my $file = readdir $dh ) { for (@ds) { push @result, $_ if $_ eq $file; } } closedir $dh or die "can't close directory: $!"; print $_, $/ for @result;
Usage:your_perl_script.pl directory_to_be_checked indexDS.txt > output_file.txt

If you tell me, I'll forget.
If you show me, I'll remember.
if you involve me, I'll understand.
--- Author unknown to me

In reply to Re: Looking up elements of an array in another array! by 2teez
in thread Looking up elements of an array in another array! by better

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