linux systemd service for listening on UDP with netcat and constantly putting the data in temporary file

laptop-battery.service

# This is a systemd service file to be able to monitor battery level on a windows laptop
# The Windows side is described in this gist:
# https://gist.github.com/manio/95ad95dc5eba708b12d658f2e6f478ea
# This unit is listening on specified UDP port and it is writing data
# to specified output file. It is overwriting the data with every new
# UDP frame.

[Unit]
Description=laptop battery monitoring daemon
After=local-fs.target

[Service]
Type=simple
Restart=always
RestartSec=1
ExecStart=nc -l -u -W1 -p772
StandardOutput=file:/tmp/laptop-battery

[Install]
WantedBy=multi-user.target