In this guide, we shall bring to light a simple yet important concept in process handling in a Linux system, that is how to completely detach a process from its controlling terminal.
When a process is associated with a terminal, two problems might occur:
- your controlling terminal is filled with so much output data and error/diagnostic messages.
- in the event that the terminal is closed, the process together with its child processes will be terminated.
To deal with these two issues, you need to totally detach a process from a controlling terminal. Before we actually move to solve the problem, let us briefly cover how to run processes in the background.
How to Start a Linux Process or Command in Background
If a process is already in execution, such as the tar command example below, simply press
Ctrl+Z to stop it then enter the command bg to continue with its execution in the background as a job.
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