Fg

lastmod 2021-10-18created 2015-12-091 edits

Run Background

To run a program in the background, put & at the end of the command.

cp test.tar test2.tar &

You can move it to the background with Ctrl + Z.

$ vi test.rb

[1]+  Stopped                 vi test.rb

Since the job has been forcibly stopped, you can resume it with the bg command.

$ bg %1

To bring a background job back, use the fg command.

$ fg %1

Use jobs to see the list of background jobs.

A background job is terminated as follows.

$ kill %1

Warning
Be careful not to leave out the `%` when using this command. If you leave it out, you will terminate init (PID 1) or kthread (PID 2), and you may have to reboot the computer.