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These commands will work with most (if not all) distributions
of Linux as well as most implementations of Unix. They're the
commands that everybody knows. To be able to navigate in
Linux, you should become familiar with these.
Monitoring Your System
An important part of system administration (especially with
your own system) is being able to know what's going on.
tail
The program tail allows you to follow a file
as it is growing. TO follow it use
/var/log/messages. Do that by typing tail -f
/var/log/messages. Of course, you can use
anything else, including the other logs in
/var/log/. Another file you may want to keep an eye out
for is /var/log/secure.
Another program you may want to look at is
head. It monitors the top of the file specified,
instead of the bottom.
top
This program shows a lot of stuff that goes on with your
system. In the program, you can type:
-
M for memory usage information
-
P for CPU information
-
q to quit
Once you try it, you can see that top shows
you the memory usage, uptime, load average, CPU states, and
processes.
w
Typing w will tell you who is
logged in. This can be helpful if you're the only one who
uses your computer and you see someone logged in that's not
supposed to be.
Another alternative is who.
Copyright © 1997-1999 Joshua Go
(jtg@computers.iwz.com). All rights reserved. Permission
to use, distribute, and copy this document is hereby granted.
You may modify this document as long as credit to me is
given.
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