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Returning A Process To The Foreground
A process in the background is immune from keyboard input, including any attempt inter- rupt it with a Ctrl-c. To return a process to the foreground, use the fg command, this way:
[me@linuxbox ~]$ jobs
[1]+ Running [me@linuxbox ~]$ fg %1
xlogo &
[me@linuxbox ~]$ jobs
[1]+ Running [me@linuxbox ~]$ fg %1
xlogo
xlogo
The command fg followed by a percent sign and the job number (called a jobspec) does the trick. If we only have one background job, the jobspec is optional. To terminate xl- ogo, press Ctrl-c.