March 2012
Beginner to intermediate
230 pages
7h 27m
English
Content preview from Linux Pocket Guide, 2nd Edition
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Name
top — stdin stdout - file -- opt --help --version
Synopsis
top [options]The top command lets you
monitor the most active processes, updating the display at regular
intervals (say, every second). It is a screen-based program that
updates the display in place, interactively.
$ top
94 processes: 81 sleeping, 1 running, 0 zombie, 11 stopped
CPU states: 1.1% user, 0.5% system, 0.0% nice, 4.5% idle
Mem: 523812K av, 502328K used, 21484K free, 0K shrd, ...
Swap: 530104K av, 0K used, 530104K free 115300K cached
PID USER PRI NI SIZE SHARE STAT %CPU %MEM TIME COMMAND
26265 smith 10 0 1092 840 R 4.7 0.2 0:00 top
1 root 0 0 540 472 S 0.0 0.1 0:07 init
2 root 0 0 0 0 SW 0.0 0.0 0:00 kflushd
...While top is running, you
can press keys to change its behavior, such as setting the update
speed (s), hiding idle processes
(i), or killing processes
(k). Type h to see a complete list and q to quit.
Useful options
|
|
Perform
|
|
|
Update the display
every |
|
|
Display only the
processes with PID |
|
|
Display the command-line arguments of processes. |
|
|
Print on standard
output noninteractively, without playing screen tricks.
|
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.