Hi,

I think you're a bit confused... the fact that you use Proc::PID::File has nothing to do with a daemon, is just to make more handy the manipulation of pid files, like File::Pid does.

Easy way to convert a program into a daemon is using Proc::Daemon.

Then for Debian and derivates, like Ubuntu see the man page of start-stop-daemon and be ready to write a small Bash script, it even allows you to create the pid file, or "daemonize" your process.

Regards,