Undo bg; Undo putting a process into the background?

Question

I've started a long running and machine hog process. I've hit CTRL-Z to stop it. I've then put it in the background with bg. Oops, I should have restarted with fg so that I could easily stop and start it again. What is the easiest way to stop a process that was just put into the background?

Answer 1

As noted, fg = foreground.

You can also try jobs to see them. Then %N can be used with fg or kill e.g. fg %4

Answer 2

Just run fg or fg %+. The job processing will keep track of the job and you can just tell it to go into the foreground again.

Answer 3

You don't need to stop it to put it into the foreground, just fg it.