| Jobs running in the foreground are suspended by typing Ctl-z (Control-z). So instead of waiting for the long-running split command to complete, it is interrupted using Ctl-z: $ split ?000 hugefile Ctl-z [3] + Stoppedsplit ?000 hugefile $ Stopped and backgrounded jobs are brought back into the foreground with the fg command. If no argument is given, the current (most recently stopped or backgrounded) job is used. The stopped split job is brought back into the foreground with fg: $ fg split ?000 hugefile Stopped jobs are put into the background with the bg command. If no argument is given, the most recently stopped job is used. In the next example, we want to put the split job back in the background. It is currently running in the foreground, so it must first be suspended with Ctl-z again: $ fg split ?000 hugefile Ctl-z Now, it can be put into the background using bg: $ bg [3] split ?000 hugefile & The split job is brought into the foreground with fg, and we are back to where we started. This time we use the job number as the argument to fg: $ fg %3 split ?000 hugefile | 
