Daemon internals

A daemon is a program that runs as a background process, rather than being under the direct control of an interactive user.

How to daemonize a function

Here are all the methods to be defined:

• start := daemonize + run
• stop := kill process from (known/stored) PID
• restart : stop + start
• run := custom logic
• daemonize := apply daemonization procedure to get independent process

Components

• PID file
• .pid file extension
• Stored in /tmp/daemonizer/pidfiles/