{{tag>howto tmux updates}}
====== Running Updates In TMUX ======

I want to make updates to be executed inside a **tmux-session** to make the update process resilient against interrupted ssh-connections.
  * update distribution packages on SUSE and Debian 
  * update git repositories
  * update flatpak packages
  * <del>update snap packages</del> (it seems like snaps will get updated automatically)

===== Sources =====
  * https://how-to.dev/how-to-create-tmux-session-with-a-script
  * https://www.golinuxcloud.com/tmux-commands/#Working_with_tmux_commands
  * https://superuser.com/questions/863538/tmux-execute-command-in-session-on-startup
  * https://www.peterdebelak.com/blog/tmux-scripting/
  * https://www.gnu.org/software/coreutils/manual/html_node/install-invocation.html#install-invocation
  * https://stackoverflow.com/questions/35707038/how-to-use-the-install-command-with-a-heredoc
  * https://linuxhint.com/bash-heredoc-tutorial/
  * https://www.cyberciti.biz/faq/using-heredoc-rediection-in-bash-shell-script-to-write-to-file/
  * https://www.cyberciti.biz/faq/find-linux-distribution-name-version-number/
  * https://wiki.archlinux.org/title/Flatpak#Update_a_runtime_or_application

===== ToDo =====
  * https://github.com/earwig/git-repo-updater

===== Implementation =====
<sxh bash; gutter: false>
zypper in lsb-release


install -bD --owner=root --group=root --mode=0750 -T <(cat << 'EOF'
#!/bin/bash
  
# debug
#set -x
 
declare _updatecommand
declare _flatpak_updatecommand
declare _gitup_user_updatecommand
declare _osvendor
declare _highlevelpackagemanager
declare _os_updatecommand
 
_flatpak_updatecommand="flatpak --system update -y"
_gitup_user_updatecommand="sudo -u def python3.8 /home/def/.local/bin/gitup"
  
if [ ! command -v lsb-release >/dev/null 2>&1 ] && [ ! command -v lsb_release >/dev/null 2>&1 ] 
then 
    echo >&2 "ERROR: lsb-release required but it's not installed.  Aborting."
    exit 1;
fi
  
_osvendor="$( lsb-release -is )"
  
  
case $_osvendor in
    openSUSE)
        _highlevelpackagemanager="$( command -v zypper )"
        _os_updatecommand="${_highlevelpackagemanager} ref && ${_highlevelpackagemanager} dup"
        ;;
          
    Debian)
        _highlevelpackagemanager="$( command -v apt )"
        _os_updatecommand="${_highlevelpackagemanager} update && ${_highlevelpackagemanager} -y upgrade && ${_highlevelpackagemanager} -y full-upgrade"
        ;;
  
    *)
        echo >&2 "ERROR: Your operating system (${_osvendor}) is not supported. Aborting."
        exit 1
        ;;
esac
 
_updatecommand="${_flatpak_updatecommand} && ${_gitup_user_updatecommand} && ${_os_updatecommand}"
 
tmux new -s sysupdate -d
tmux send-keys -t sysupdate "${_updatecommand}" C-m
tmux attach -t sysupdate
EOF
) /root/scripts/sysupdate/sysupdate

ln -s /root/scripts/sysupdate/sysupdate /root/bin/AAA

# as user
su - <USERNAME>
mkdir -pv ~/repos/extern/
git clone https://github.com/earwig/git-repo-updater.git ~/repos/extern/git-repo-updater
cd ~/repos/extern/git-repo-updater
python ./setup.py install --user
</sxh>
add ~/.local/bin to your PATH
<sxh bash; gutter: false>
vim ~/.bashrc
</sxh>
<sxh bash; highlight: []; title: ~/.bashrc>
# PATH
export PATH="${PATH}:~/bin:~/.local/bin"
</sxh>
<sxh bash; gutter: false>
source  ~/.bashrc
gitup --add ~/repos/
</sxh>

<sxh bash; gutter: false>
# as root
install -bD --owner=root --group=root --mode=0750 -T <(cat << 'EOF'
[Unit]
Description=Update Flatpak
After=network-online.target
Wants=network-online.target

[Service]
Type=oneshot
ExecStart=/usr/bin/flatpak update --noninteractive --assumeyes

[Install]
WantedBy=multi-user.target
EOF) /etc/systemd/user/flatpak-update.service

install -bD --owner=root --group=root --mode=0750 -T <(cat << 'EOF'
[Unit]
Description=Update Flatpak

[Timer]
OnBootSec=2m
OnActiveSec=2m
OnUnitInactiveSec=24h
OnUnitActiveSec=24h
AccuracySec=1h
RandomizedDelaySec=10m

[Install]
WantedBy=timers.target
EOF) /etc/systemd/user/flatpak-update.timer

</sxh>

----
~~DISCUSSION~~