How to keep the process running after the shell exits

It usually takes a long time to run some monitoring tools or disk check tasks in shell.ProgramThe sighup signal is received to terminate the operation. Obviously, this is not the case.

The nohup and bash built-in commands disown can solve this problem.

1. nohup

Nohup [command]

After running this command, the command ignores the sighup signal during execution.

If there is no redirection to the standard output in command, nohup will output the standard output and standard error to the nohup. Out file, which exists in the current directory or home directory.

At this time, the user logout and command will continue to run

2. disown

Disown-H jobnumber

Jobnumber is obtained by jobs.

This command causes the background command to ignore the sighup signal.

Disown-ar

The sighup signal is ignored for all background commands.