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

//usr/lib/systemd/user/update-notifier-release.path

 [Unit]
Description=Path trigger for new release of Ubuntu notifications
PartOf=graphical-session.target

[Path]
PathChanged=/var/lib/ubuntu-release-upgrader/release-upgrade-available