Skip to Main Content
Unix in a Nutshell, 4th Edition
book

Unix in a Nutshell, 4th Edition

by Arnold Robbins
October 2005
Intermediate to advanced content levelIntermediate to advanced
908 pages
46h 42m
English
O'Reilly Media, Inc.
Content preview from Unix in a Nutshell, 4th Edition

Name

ps

Synopsis

    ps [options]

Report on active processes. ps has three types of options. GNU long options start with two dashes, which are required. BSD options may be grouped and do not start with a dash, while Unix98 options may be grouped and require an initial dash. The meaning of the short options can vary depending on whether or not there is a dash. In options, list arguments should either be separated by commas or put in double quotes. In comparing the amount of output produced, note that e prints more than a and l prints more than f for each entry.

Options

nums, pnums, -pnums, --pid=nums

Include only specified processes, which are given in a space-delimited list.

--nums, --sid=nums

Include only specified session IDs, which are given in a space-delimited list.

[-]a

As a, list all processes on a terminal. As -a, list all processes on a terminal except session leaders.

[-]c

As c, show the true command name. As -c, show different scheduler information with -l.

-C cmds

Select by command name.

--cols=cols, --columns=cols, --width=cols

Set the output width (the number of columns to display).

-d

Select all processes except session leaders.

-e, -A

Select all processes.

e

Include environment information after the command.

[-]f, -F, --forest

As -f, display full listing. As f or --forest, display “forest” family tree format, with ASCII art showing the relationships.

-glist, -Glist, --group=groups, --Group=groups

For -g, select by session leader if list contains numbers, or by group if it contains group ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Learning the Unix Operating System, 5th Edition

Learning the Unix Operating System, 5th Edition

John Strang, Grace Todino, Jerry Peek
UNIX and Linux System Administration Handbook, 5th Edition

UNIX and Linux System Administration Handbook, 5th Edition

Trent R. Hein, Evi Nemeth, Garth Snyder, Ben Whaley, Dan Mackin

Publisher Resources

ISBN: 0596100299Errata Page