To find out what jobs are running under your current shell, use the jobs(C) command, as follows:
$A ``+'' in the second column signifies that the job has higher priority than a ``-''. The third column contains the state of the job; whether it is running, paused, waiting for input, or stopped. Finally, we see the command line that created the current job.
jobs + Running tar tv3 &  - Running find / -name README -print > logfile & $
Use the -l option to jobs to display the PID after the job number. To limit the display to PID only, use the -p option.
jobs -l + 5236 Running xrep *.s >bar &  - 5195 Running checkmac *.s >foo& $
jobs -p5236 5195 $