Mon Jun  4 21:46:34 CEST 2018
debootstrap Ubuntu bionic
18.04
https://help.ubuntu.com/community/DebootstrapChroot
debootstrap --variant=buildd --arch=amd64 \
  bionic ./ http://archive.ubuntu.com/ubuntu/

--variant=minbase

arm debootstrap Ubuntu bionic
debootstrap --variant=buildd --arch=armhf bionic /ubuntu-bionic http://ftp.tu-chemnitz.de/pub/linux/ubuntu-ports

Thu Jun 22 18:53:13 CEST 2017
ubuntu hack
https://ubuntuforums.org/showthread.php?t=1997229
dpkg-divert --local --rename --add /sbin/initctl
ln -s /bin/true /sbin/initctl
touch /etc/init.d/systemd-logind

Wed Jun  6 13:00:47 CEST 2018
Ubuntu /etc/apt/sources.list generator
https://askubuntu.com/questions/586595/restore-default-apt-repositories-in-sources-list-from-command-line

printf 'deb http://archive.ubuntu.com/ubuntu %s main multiverse universe restricted\n' $(lsb_release -sc){,-security} > /etc/apt/sources.list

. /etc/lsb-release
printf 'deb mirror://mirrors.ubuntu.com/mirrors.txt %s main multiverse universe restricted\n' $DISTRIB_CODENAME{,-security} > /etc/apt/sources.list

Thu Jul 12 13:30:20 CEST 2018
wget -q http://releases.ubuntu.com/ -O - | awk '/^<li><a href="[a-z]+\/"/{print}' | sed 's/^<li><a href="\([a-z]\+\)\/">\(Ubuntu [^<]\+\).*/\1\t\2/'

Thu Jul 12 13:35:34 CEST 2018
http://mirrors.ubuntu.com/mirrors.txt
https://launchpad.net/ubuntu/+archivemirrors

Mon Dec 10 18:21:28 CET 2018
ubuntu version upgrade
apt install update-manager-core
vi /etc/update-manager/release-upgrades
do-release-upgrade

Wed Dec 14 09:22:59 CET 2022
apk add binutils # for ar
debootstrap --variant=minbase --arch=arm64 kinetic ./ubuntu-kinetic http://ftp.tu-chemnitz.de/pub/linux/ubuntu-ports