core-agent-linux/qubes-rpc/qubes.InstallUpdatesGUI

#!/bin/sh

# This script should open some GUI to install updates.
# If you are creating package for other distribution, feel free to replace it
# with distribution-specific script.

if [ -e /etc/redhat-release -a -x /usr/bin/dnf ]; then
    xterm -title update -e su -l -c 'dnf update --best; echo Done. Press Enter to exit.; read x'
elif [ -e /etc/redhat-release -a -x /usr/bin/yum ]; then
    xterm -title update -e su -l -c 'yum update; echo Done. Press Enter to exit.; read x'
elif [ -e /etc/debian_version ]; then
    xterm -title update -e su -l -c 'apt-get update && apt-get -V dist-upgrade; echo Done. Press Enter to exit.; read x'
elif [ -e /etc/arch-release ]; then
    xterm -title update -e su -l -c 'pacman -Suy; echo Done. Press Enter to exit.; read x'
else
    xterm -title update -e su -l -c 'echo Unsupported distribution, install updates manually; bash -i'
fi
# Notify dom0 about installed updates
su -c 'service qubes-update-check start'