#!/usr/bin/perl -w
#
# Copyright (C) 2007, Joshua D. Abraham (jabra@spl0it.org)
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
# use strict;
#
# wipe_device - destory all the data on a device
#
# ex: $ ./wipe_device.pl /dev/sda1 13
#
use strict;
if ( -e $ARGV[0] && defined($ARGV[1]) ) {
    print "${ARGV}[1] needs to be a number\n" && exit unless ( $ARGV[1] =~ /\d+/ );
    print "You need /dev/urandom\n" && exit unless ( -e '/dev/urandom' );
    print "You need /dev/null\n" && exit unless ( -e '/dev/null' );
    my $i = 1;
    for( 1..${ARGV}[1] ) {
        print "Wipe $i\n";
        system("dd if=/dev/urandom of=${ARGV}[0]");
        system("dd if=/dev/zero of=${ARGV}[0]");
        $i++;
    }
}
else {
    print "Usage: $0 [device] [number of iterations]\n";
}