Linux jobs command
jobs [-lnprs] [JOBSPEC ...]
|JOBSPEC||Job name or number.|
|-l||Lists process IDs in addition to the normal information.|
|-n||List only processes that have changed status since the last notification.|
|-p||Lists process IDs only.|
|-r||Restrict output to running jobs.|
|-s||Restrict output to stopped jobs.|
Displays all running jobs. Output is similar to the following:
 + Stopped (user) top
Here, the job number 1 was suspended by the user, and the process was the top utility.
When supplied the -l option, jobs displays process IDs in addition to job number, similar to the following output:
 16882 Running ./chsearchproc (wd: ~/public_html/cgi-bin/chsearch)
at — Schedule a command to run at a certain time.
csh — The C shell command interpreter.
kill — Send a signal to a process, affecting its behavior or killing it.
ksh — The Korn shell command interpreter.
ps — Report the status of a process or processes.
sh — The Bourne shell command interpreter.