Instructions for use of the jobs command from the terminal.
To stop a running process:
$ ctrl + z
+ Stopped watch -n 60 cat /proc/mdstat
List jobs with process id
$ jobs -l
+ 31337 Stopped watch -n 60 cat /proc/mdstat
Kill job #1. If killing process while stopped, you will have to send the process to the foreground for it to be killed.
$ kill %1
$ fg %1
watch -n 60 cat /proc/mdstat
Check that the process is no longer running. No jobs will be listed and the output will be blank.