If it is not explicitly told in following recipe, setting up services are described for Ubuntu 20.04 server, but applications are described for Xubuntu 20.04 workstation. If you use different Ubuntu version or Linux distribution, settings as well as content, names and places of configuration files may be different!
Got it.

Ubuntu pielāgota diska izveide

Darba vietas sagatavošana

Uzstāda nepieciešamās programmas:
sudo apt-get install squashfs-tools
sudo modprobe squashfs
Sagatavo vidi. Oriģinālo *.iso uzmontē uz /tmp/livecd:
mkdir /tmp/livecd
sudo mount -o loop /home/inst/ubuntu-12.04.2-desktop-i386.iso /tmp/livecd
Izveido mapi struktūru jaunā diska failiem:
mkdir -p ~/livecd/cd
Darba mapē pārkopē failus (izņemot casper/filesystem.squashfs) no oriģinālā CD uz darba mapi:
rsync --exclude=/casper/filesystem.squashfs -a /tmp/livecd/ ~/livecd/cd
Izveido jauno squashfs failu sistēmas mapi struktūru darba mapē:
mkdir ~/livecd/squashfs; mkdir ~/livecd/custom
sudo mount -t squashfs -o loop /tmp/livecd/casper/filesystem.squashfs ~/livecd/squashfs/
sudo cp -a ~/livecd/squashfs/** ~/livecd/custom
Sagatavo chroot vidi:
sudo cp /etc/resolv.conf /etc/hosts ~/livecd/custom/etc/
Aktivizē jaunu sesiju, ar modificētu saknes mapi, izmantojot chroot:
sudo chroot ~/livecd/custom
mount -t proc none /proc/; mount -t sysfs none /sys/
export HOME=/root; export LC_ALL=C

CD satura pielāgošana

Pakotņu modificēšana

Noņem reti izmantotās pakotnes:
apt-get purge compiz-core evolution** f-spot gnome-games** pitivi** rhythmbox**
apt-get purge `dpkg-query -W --showformat='${Package}\n' | grep language-pack | egrep -v '\-en'`
Modificē pakotņu krātuvju sarakstu:
vi /etc/apt/sources.list
- Neatbalstītajām krātuvēm saliek main restricted universe multiverse
- Ja vēlas, precise nomaina uz precise-backports
- archive.ubuntu.com nomain uz lv.archive.ubuntu.com
Atjauno pakotnes:
apt-get update; apt-get dist-upgrade
Skatīt arī custom.recipes.WorkstationAdditions

chroot vides sakopšana

Novāc failus:
apt-get clean; apt-get autoremove
rm -rf /tmp/**; rm -f /etc/hosts /etc/resolv.conf
Nomontē mapes un iziet:
umount /proc/; umount /sys/
exit

ISO faila izveide

Atjauno manifesta failus:
chmod +w ~/livecd/cd/casper/filesystem.manifest
sudo chroot ~/livecd/custom dpkg-query -W --showformat='${Package} ${Version}\n' > ~/livecd/cd/casper/filesystem.manifest
sudo cp ~/livecd/cd/casper/filesystem.manifest ~/livecd/cd/casper/filesystem.manifest-desktop
ja nepieciešams, izdzēš iepriekšējo squashfs failu:
sudo rm -f ~/livecd/cd/casper/filesystem.squashfs
Un izveido jaunu squashfs failu:
sudo mksquashfs ~/livecd/custom ~/livecd/cd/casper/filesystem.squashfs
Atjauno /livecd/cd/README.diskdefines failu.
Atjauno MD5 summas:
sudo rm ~/livecd/cd/md5sum.txt
sudo -s
(cd ~/livecd/cd && find . -type f -print0 | xargs -0 md5sum > md5sum.txt)
exit
Izveido ISO failu:
cd ~/livecd/cd;
sudo mkisofs -r -V "Ubuntu Odo" -b isolinux/isolinux.bin -c isolinux/boot.cat -cache-inodes -J -l \
-no-emul-boot -boot-load-size 4 -boot-info-table -o /home/inst/ubuntu-12.04.2-custom.iso .