I want to make a `systemd` unit for `pgagnent`.

I found only `init.d` script on this page <http://technobytz.com/automatic-sql-database-backup-postgres.html>, but I don't know how to exec `start-stop-daemon` in systemd.

I have written that unit:

```
[Unit]
Description=pgagent
After=network.target postgresql.service

[Service]
ExecStart=start-stop-daemon -b --start --quiet --exec pgagent --name pgagent --startas pgagent -- hostaddr=localhost port=5432 dbname=postgres user=postgres
ExecStop=start-stop-daemon --stop --quiet -n pgagent 

[Install]
WantedBy=multi-user.target

```

But I get errors like:

```
[/etc/systemd/system/pgagent.service:14] Executable path is not absolute, ignoring: start-stop-daemon --stop --quiet -n pgagent

```

What is wrong with that unit?