List all running or stopped jobs, or list those specified by
For example, you can check whether a long compilation or text format
is still running. Also useful before logging out. See "Job
List job IDs and process group IDs.
List only jobs whose status changed since last notification. Korn shell only.
List process group IDs only.
Replace each job ID found in
cmd with the associated process ID
and then execute
cmd. Not valid for Korn shell.