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 f available 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< /STRONG>.!SPAN>
For more information on the man command, see the man manual.
Previous Lesson: Environment Variables
Next Lesson: The Linux File System
Comments (most recent first)
Shiblie (28 Jun 2010, 14:26)
HI
How do i get a good dictionary file to crack a password? password.lst
Pieczark (12 Apr 2010, 18:33)
Congratulations! Great tutorial, very useful and easy to understand. Thanks
a lot.
Pala (02 Apr 2010, 03:19)
All i what to say..
Thank u so much.
Alok Ranjan (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.
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