In our previous tutorial, you have learned about how to start or run command in background. Now this tutorial will help you to how to move running command in background. This is helpful, if you have started a command on terminal and that command is taking to much time. Now you want to move that in background, so that you can continue with other tasks.
Move Running Command in Background
For example you are taking a backup of large number of files, You have started command on terminal, But after mid of this task you think that this is taking longer time and you have some other pending tasks like below:
root@tecadmin:~$ tar czf log-backup.tar.gz /var/log
Now press CTRL + Z to pause the current running command on terminal.
CTRL + Z [1]+ Stopped tar czf log-backup.tar.gz /var/log
Now type bg command on terminal, This will start last paused command in background by appending & in command.
root@tecadmin:~$ bg [1]+ tar czf log-backup.tar.gz /var/log &
List Running Commands in Background
To list all jobs running in background use jobs command. It will show all running commands with their job id.
root@tecadmin:~$ jobs [1]+ Running tar czf log-backup.tar.gz /var/log &
Move Background Commands to Foreground (Terminal)
Now, If you need to any background jobs to move to foreground. Use fg command with job id and this will move background command with that job id to terminal. Job id can be found using jobs command as showing in above example.
root@tecadmin:~$ fg 1
3 Comments
Appreciate your expertise. Thank you.
Well explained. Thank you.
Nice.
I had a critical headlessVM running that died at the worst time. I spent ages getting it working, but in my investigation, I moved the VM process from being spin up default in the background to the foreground to get extra diag info. Now it’s working I can’t risk shutting it down to dig deeper for about a week until it’s not in use. If my putty window drops I’m might be back in the same situ. The above saved my bacon. Thanks.