# jankratochvil:
# ln -s ../../../root/bin/shutdown-detect.service /etc/systemd/system/shutdown-detect.service; systemctl enable shutdown-detect.service
# https://unix.stackexchange.com/a/41756/296319

[Unit]
Description=shutdown-detect

[Service]
Type=oneshot
RemainAfterExit=true
ExecStart=/root/bin/shutdown-detect-boot
ExecStop=/root/bin/shutdown-detect

[Install]
WantedBy=multi-user.target