disown

The "disown" command is a command line tool in Unix-like operating systems that allows users to detach running processes from their session and prevent them from being terminated when the user logs out or the session is closed.

Using the "disown" command, users can remove a process from their current shell's job control, essentially making it no longer associated with their session. This means that even if the user closes the terminal or logs out, the process will continue running in the background indefinitely.

By detaching a process with "disown", users can also redirect its standard input, output, and error streams to files or ignore them completely. This is particularly useful when users want to free up the terminal or redirect output for long-running tasks.

In addition to detaching processes that are currently running, the "disown" command can also be used when launching a new process. By prefixing a command with "disown", users can start it as a background process from the beginning and ensure that it continues running even after they log out or close the terminal.

The "disown" command is often used in shell scripting or for managing long-running tasks that need to persist even if the user's session ends. It provides a way to detach and manage processes, freeing users from the worry of inadvertently terminating them.

However, it's worth noting that "disown" only detaches the process from the current session, and it does not make it immune to system-wide shutdowns or reboots. When the system is restarted, any processes that were disowned will still be terminated.