Linux Help

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1. Whatis
Command: whatis <command>
For example: whatis ls
 
2. --help
Command: <command> --help
For example: ls --help
 
3. man
Command: man [<chapter>] <command>
chapter:
    1. User commands (important)
    2. System calls
    3. Library calls
    4. Special files
    5. File formats (important)
    6. Games
    7. Miscellaneous
    8. Administrative commands (important)
Special comand: man -k <command>
Feature: use to search all related man page for the command
 
4. info
Command: info <command>
 
5. Extended Documentation
/usr/share/doc
 
6. Redhat Documents

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