LINUX CLASSES - LINUX BASICS
Where Can I Get Help on Linux Commands?
How to Get Help
Need help figuring out what a command is supposed to do? In an operating system with strange-sounding
commands like !SPAN>awk, !SPAN>grep, and !SPAN>sed, it's not surprising. The !SPAN>man command (short for manual) is a source of online help for most Linux commands
. For example, you can enter!SPAN>
to learn all the secrets of the very useful !SPAN>grep command. (For a summary of the most-used Li
nux commands, see the section "Important Linux Commands").!SPAN>
If !SPAN>man claims no knowledge of the command in which you're interested, try !SPAN>help instead. This command will list all the built-in bash commands with a brief syntax summary.!SPAN>
Another help format called info is more powerful, since it provides hypertext links to make reading large documents much easier, but not all documentation is available in info format. T
here are some very complete info documents on various aspects of Red Hat (especially the portions from the GNU project). !SPAN>
To try it out, use the !SPAN>info command without any arguments. It will present you with a list o
documentation. Press !SPAN>h to read the help for first-time users, or use the !SPAN>tab key to move the cursor to a topic
link and then press !SPAN>enter to follow the link. Pressing !SPAN>p returns you t
o the previous page, !SPAN>n moves you to
the next page, and !SPAN>u goes up one level of documentation. To exit info, press !SPAN>q<
For more information on the man command, see the
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Comments - most recent first
(Please feel free to answer questions posted by others!)
(31 Jan 2012, 08:42
I googled it.. and searched many links but could not trace the exact way so
I posted here
(31 Jan 2012, 08:35
See this link:
(31 Jan 2012, 01:05
Can you please tell me how to pass inputs from a C program to a shell
(24 Jan 2012, 07:55
I Really respect your support its to helpful for Linux lovers.
(01 Jan 2012, 02:33
The application, system, and administration tabs are gone from my top
panel.How dp I get them back?
(17 Nov 2011, 08:02
Dr. Bob, thanks for the tutorial. I'm a Windows server admin with little
linux/unix experience that needs to learn fast and this is perfect.
(05 Nov 2011, 05:43
(19 Oct 2011, 06:31
I need a summary of most used linux command.
(21 Sep 2011, 11:27
Hi Dr. Bob, you are doing a great work. Thank you sir.
(15 Aug 2011, 10:19
Hi Bob, i am a beginner to Linux. I don't know where to start. do you know
any video tutorial or give me some guidance. i will really appreciate it.
(05 Mar 2011, 04:34
(28 Jun 2010, 14:26
How do i get a good dictionary file to crack a password?
(12 Apr 2010, 18:33
Congratulations! Great tutorial, very useful and easy to understand. Thanks
(02 Apr 2010, 03:19
All i what to say..
Thank u so much.
(05 Feb 2010, 05:04
Dr Bob. I am a enthusiast and wanted to get to know Linux. I found this
site very userful. The concepts ans commands are explained in simplest
possible way. Thankyou very much.
I welcome your comments. However... I am puzzled by many people
who say "Please send me the Linux tutorial." This website *is* your Linux Tutorial! Read everything here, learn
all you can, ask questions if you like. But don't ask me to send what you already have. :-)
NO SPAM! If you post garbage, it will be deleted, and you will be banned.
by Bob Rankin
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