systemd-system-update-generator — Generator for redirecting boot to offline update mode
/usr/lib/systemd/system-generators/systemd-system-update-generator
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
System
Updates Specification.
systemd-system-update-generator
implements the generator
specification.