how to bring a background job to foreground
Solution 1:
Did you use Ctrl+Z, SIGTSTP or SIGSTOP to send it to the background? If so, you can bring it back to the foreground with the command
fg
To get a list of all the stopped jobs and background jobs, use
jobs
Solution 2:
If you have a list of backgrounded jobs (as seen with the 'jobs' command), you can pick a particular one with
fg %number
where number is the job number.
e.g.
jobs
[1] suspended top
[2] - suspended top
[3] + suspended top
fg %2