Write the PID to the specified file

Run a command (that does not daemonize itself) as a Unix daemon.
More information: <http://software.clapper.org/daemonize/>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

daemonize -p {{path/to/pidfile}} {{command}} {{command_arguments}}

click the source code to copy install daemonize on any operating system with command-not-found.com