I want to know How old are my files which are present in the directory. If it is older than seven days I want to delete it from the directory. For that I tried this. 

#!/usr/bin/perl --
use strict;
use warnings;

my $command = ;

my @files = `ls` ;
my $old=0;
foreach my $file (@files)
{
        chomp $file;
        print $command;
        $old = `expr $(date +%s) - $(date +%s -r $file)`;
        print "$file","::",$old,"\n";
}

[download]

But in these the "$" sign in the command mismatches. I used escape(\) before that. Even its not working. How to do this

In reply to How to Know how much old my file is by ravi45722

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