check.service

[Unit]
After=graphical.target systemd-logind.service
After=cloud-init.target
# This utmp thingy is a bit annoying. It's the last thing for me to see when booting.
After=systemd-update-utmp-runlevel.service
# systemd turns the status display. e.g. [ FAILED ] off once the user-sessions have been started. We make our service run before, s.t. we can see the failed on the console.
# If we enable that, though, then it doesn't boot.
#Before=systemd-user-sessions.service

[Service]
Type=oneshot
ExecStart=/usr/local/bin/check.sh
StandardOutput=tty
#TTYPath=

[Install]
WantedBy=default.target
# WantedBy=multi-user.target
# WantedBy=graphical.target