There are many other parameters for ps, including a large number of options
for compatibility with other UNIXes, all of which can be found in the man
page.
Listing Jobs with jobs
A job is any program you interactively start that doesn’t then detach from the
user and run on its own (like a daemon does). If you’re running an interactive
program, you can press Ctrl+Z to suspend it. Then you can start it back in the
foreground (using fg, covered next) or in the background (using bg, covered
with fg).
While the program is suspended or running in the background, you can start
another program. Then you have two jobs running. You can also start a
program running in the background by appending an & like this:
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matthew@seymour:~$ programname &
When started this way, a program runs as a background job. To list all the jobs
you are running, you can use jobs:
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matthew@seymour:~$ jobs
There are several useful parameters you can use with jobs, including the
following:
-l—Lists the process IDs along with the normal output
-n—Displays information only about jobs that have changed status since
the user was last notified of their status
-r—Restricts output to running jobs
-s—Restricts output to stopped jobsRunning One or More Tasks in the Background
Put the & (ampersand) symbol at the end of any command to make it run in
the background:
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matthew@seymour:~$ command &
[1] 11423