systemd-system-update-generator (8) - Linux Manuals
systemd-system-update-generator: Generator for redirecting boot to offline update mode
NAME
systemd-system-update-generator - Generator for redirecting boot to offline update mode
SYNOPSIS
/lib/systemd/system-generators/systemd-system-update-generator
DESCRIPTION
systemd-system-update-generator is a generator that automatically redirects the boot process to system-update.target, if /system-update exists. This is required to implement the logic explained in the systemd.offline-updates(7).
systemd-system-update-generator implements systemd.generator(7).