sudo apt-get install squashfs-tools mkisofs qemu

-- wget ubuntu-8.04-desktop-i386.iso
sudo mount download/iso/ubuntu-8.04-desktop-i386.iso /mnt/ -o loop

mkdir ~/live
cd ~/live

mkdir extract-cd
#rsync --exclude=/casper/filesystem.squashfs -a mnt/ extract-cd

mkdir squashfs
sudo mount -t squashfs -o loop /mnt/casper/filesystem.squashfs squashfs

mkdir edit
sudo cp -a squashfs/* edit/

sudo cp /etc/resolv.conf edit/etc/

sudo cp /etc/hosts edit/etc/

sudo mount --bind /dev/ edit/dev

sudo mount --bind /dev/ edit/dev

sudo chroot edit
mount -t proc none /proc
mount -t sysfs none /sys

export HOME=/root
export LC_ALL=C

# get free isze
dpkg-query -W --showformat='${Installed-Size} ${Package}\n' | sort -nr | less
apt-get remove --purge openoffice* evolution* ubuntu-docs gnome-games-data gimp*

add universe, multiuniverse to 

install apps

apt-get clean

rm -rf /tmp/*

rm /etc/resolv.conf

umount /proc
umount /sys
exit
sudo umount edit/dev