4-update-iso-chroot.sh

#!/bin/bash

# Linuxium's scripts to create a custom Ubuntu ISO

source chroot-variables.txt

# include definition of additional packages to be installed
sudo cp iso_packages.source iso-chroot/usr/src

# add in kernel debs
sudo bash -c "cp deb_binaries/*.deb iso-chroot/usr/src/"

# add in UCM files for sound
sudo mkdir -p iso-chroot/usr/share/alsa/ucm
sudo cp -rf ${PATH_TO}/UCM-master/* iso-chroot/usr/share/alsa/ucm

# install kernel debs and additional packages
sudo mv iso-chroot/etc/apt/sources.list iso-chroot/etc/apt/sources.list.orig
sudo cp ${PATH_TO}/sources.list iso-chroot/etc/apt/
sudo cp /etc/resolv.conf iso-chroot/etc/
sudo mount --bind /dev/ iso-chroot/dev
sudo chroot iso-chroot <<+
mount -t proc none /proc
mount -t sysfs none /sys
mount -t devpts none /dev/pts
export HOME=/root
export LC_ALL=C
dbus-uuidgen > /var/lib/dbus/machine-id
dpkg-divert --local --rename --add /sbin/initctl
ln -s /bin/true /sbin/initctl

dpkg -i /usr/src/linux*.deb 

apt-get update && apt-get -y upgrade

source /usr/src/iso_packages.source
rm /usr/src/iso_packages.source

apt-get clean
apt-get autoclean
apt-get -y autoremove

rm /var/lib/dbus/machine-id
rm /sbin/initctl
dpkg-divert --rename --remove /sbin/initctl

umount /proc || umount -lf /proc
umount /sys
umount /dev/pts
+
sudo umount iso-chroot/dev
sudo mv iso-chroot/etc/apt/sources.list.orig iso-chroot/etc/apt/sources.list
sudo echo -n | sudo tee iso-chroot/etc/resolv.conf > /dev/null
sudo rm -rf iso-chroot/root/.bash_history
sudo rm -rf iso-chroot/run/blkid
sudo rm -rf iso-chroot/run/lock/dmraid
sudo rm -rf iso-chroot/run/lvm/.cache
sudo rm -rf iso-chroot/boot/grub/grub.cfg
sudo rm -rf iso-chroot/etc/mtab
sudo rm -rf iso-chroot/var/lib/dpkg/status-old
sudo rm -rf iso-chroot/dev
sudo rm -rf iso-chroot/run
sudo mkdir iso-chroot/dev
sudo mkdir iso-chroot/run

# update the ISO
if [ ${LINUXIUM_KERNEL_VERSION} != "linuxium" ]; then
	# update kernel
	sudo bash -c "cp iso-chroot/boot/vmlinuz-*-${LINUXIUM_KERNEL_VERSION:0:4}* iso-directory-structure/casper/vmlinuz.efi"
	sudo bash -c "cp iso-chroot/boot/initrd.img-*-${LINUXIUM_KERNEL_VERSION:0:4}* iso-directory-structure/casper/initrd.lz"
	# unpack initramfs
	[ -d initrd ] && rm -rf initrd
	mkdir initrd
	cd initrd
	sudo dd status=none if=../iso-directory-structure/casper/initrd.lz | gzip -d | sudo cpio -id
	# add in UCM files for sound in initramfs
	sudo mkdir -p usr/share/alsa/ucm
	sudo cp -rf ${PATH_TO}/UCM-master/* usr/share/alsa/ucm
	# repack initramfs
	sudo rm -f ../iso-directory-structure/casper/initrd.lz
	sudo find | sudo cpio -o -H newc | gzip | sudo tee ../iso-directory-structure/casper/initrd.lz > /dev/null
	cd ..
	sudo rm -rf initrd
fi