获取帮助信息

获取帮助信息

Written by Zak Zhu

参考

• 鸟哥私房菜
• RHCE培训

whatis

e.g. whatis passwd

Man Page

Usage: man [SECTION] COMMAND

SECTION	Meaning
1	Executable programs or shell commands
2	System calls (functions provided by the kernel)
3	Library calls (functions within program libraries)
4	Special files (usually found in /dev)
5	File formats and conventions eg /etc/passwd
6	Games
7	Miscellaneous (including macro packages and conventions)
8	System administration commands (usually only for root)
9	Kernel routines [Non standard]

COMMAMD --help

e.g. ls --help

Extended Doc

1. /usr/share/doc

2. Red Hat Documentation

   1. Docs: http://www.redhat.com/docs/

   • Installation Guide
   • Deployment Guide
   • Virtualization Guide

   1. Knowledge base: http://kbase.redhat.com/

   • Common questions and their solutions

   1. Deployment Guide:

   • System->Documentation->Deployment Guide
   • yelp ghelp:Deployment_Guide