I'm developing a script to monitor and take action against users who use to much disk space. At this point I'm simply collecting the information. Here is the code: 

#!/usr/bin/perl

use strict;
use warnings;

# This script will the top ten space users
# of any directory
# Neil Watson Mon Mar  1 13:05:11 EST 2004

use Getopt::Std;
use File::Find;
use Data::Dumper;

my (%opt, $utotal, $uid, $uname, $fname, %size, $size, %files);
my ($count);

# options available
# -d <dir to check>
getopts("d:", \%opt); 

my $dir = $opt{d};

# get file file information
find(\&wanted, $dir);

# get top ten offenders
print "User\t\tTotal (kb)\n";
foreach $uname (sort keys %size){ 
    print $uname."\t\t".$size{$uname}."\n";
}
#print Dumper(%files);

sub wanted{
    # scan only regular files
    if (-f){

        # owner of file but skip
        # if owner is not a user
        # (uid < 500)
        $uid = (lstat($_))[4];
        unless ($uid < 500){ 
            $uname = getpwuid $uid;

            # gather name of file
            $fname = $File::Find::name;

            # size of file (kb)
            $size = (lstat($_))[7];
            $size = int($size/1000);

            # store in a hoh
            # username {filename} => filesize
            $files{$uname} {$fname} = $size;

            # keep running total of each
            # user's files
            $size{$uname} += $size;
        }
    }
}

[download]

Now that I look at my hoh data structure I'm not sure that is it ideal. For instance, how would I select the top ten space users? I think there must be a more efficient way to do this so I'm throwing this out to my fellow monks.

Neil Watson
watson-wilson.ca

In reply to Monitoring disk usage by neilwatson

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