How can I resume a stopped job in Linux?

The command fg is what you want to use. You can also give it a job number if there are more than one stopped jobs.

The general job control commands in Linux are:

• jobs - list the current jobs
• fg - resume the job that's next in the queue
• fg %[number] - resume job [number]
• bg - Push the next job in the queue into the background
• bg %[number] - Push the job [number] into the background
• kill %[number] - Kill the job numbered [number]
• kill -[signal] %[number] - Send the signal [signal] to job number [number]
• disown %[number] - disown the process(no more terminal will be owner), so command will be alive even after closing the terminal.

That's pretty much all of them. Note the % infront of the job number in the commands - this is what tells kill you're talking about jobs and not processes.

You can also type %<process_name>; i.e., you hit Ctrl-Z in emacs, then you can type %emacs in the console and bring it back to the foreground.

Just to add to the other answers, bash lets you skip the fg if you specify a job number.

For example, these are equivalent and resume the latest job:

%
%%
fg
fg %

These resume job #4:

%4
fg 4