From perlfunc:

-M Script start time minus file modification time, in days.

Note the units: days

You print the integer portion of $diff: int($diff), so unless it has been more than one day since the directory was modified, your result will be 0.

To see that -M is returning a non-zero result, try your program without the int(). You might try the following:

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

my $dirname = ".";
opendir(DIR, $dirname) || die "can't opendir $dirname': $!";
my @dots = readdir(DIR);
closedir DIR;

foreach my $file (@dots){
    my $diff = -M $file;
    print "The age of $file is $diff : " . $diff . " : " . int($diff) 
+. "\n";
}

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In reply to Re: Age of directory by ig
in thread Age of directory by sandy1028

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