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

# this script deletes all shared memory segments accessible by the
# running user. Probably only works on Linux systems.

open(IPCS, 'ipcs |') or die "Probs opening icps : $!";

my $mode = 0;
while (<IPCS>) {
if (/(Shared)|(Semaphore)|(Message)/) {
$mode++;
next;
}
next unless /^0x[0-9a-f]+\s(\d+)\s.*$/;
system("ipcrm shm $1") if ($mode == 1);
system("ipcrm sem $1") if ($mode == 2);
system("ipcrm msg $1") if ($mode == 3);
}