Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//lib/systemd/system/snapd.recovery-chooser-trigger.service

 [Unit]
Description=Wait for the Ubuntu Core chooser trigger
Wants=getty-pre.target
Before=getty-pre.target
# don't run on classic or uc16/uc18
ConditionKernelCommandLine=snapd_recovery_mode
# only run when there are input devices
ConditionPathExistsGlob=/dev/input/event*

[Service]
# blocks the service startup until a trigger is detected or a timeout is hit
Type=oneshot
ExecStart=/usr/lib/snapd/snap-bootstrap recovery-chooser-trigger
RemainAfterExit=true

[Install]
WantedBy=multi-user.target

# started on boot only
# X-Snapd-Snap: do-not-start