Linux下寻求帮助

一 help

内部命令，Shell提供，寻求帮助可以用help，如help echo

外部命令，Shell不提供，Shell调用，XX –help，如ls –help

 

二 man

 

man XX

 

[root@wentasy root]# man 7 man
The manual sections are traditionally defined as follows:

1 Commands
Those  commands  that can be executed by the user from
within a shell.

2 System calls
Those functions which must be performed by the kernel.

3 Library calls
Most of the libc functions, such as qsort(3))

4 Special files
Files found in /dev)

5 File formats and conventions
The  format  for  /etc/passwd and other human-readable
files.

6 Games

7 Macro packages and conventions
A description of the standard file system layout, net-
work  protocols, ASCII and other character codes, this
man page, and other things.

8 System management commands
Commands like mount(8), many of which  only  root  can
execute.

9 Kernel routines
This  is  an  obsolete  manual  section.   Once it was
thought a good idea to document the Linux kernel here,
but  in  fact very little has been documented, and the
documentation that exists is outdated  already.  There
are  better sources of information for kernel develop-
ers.

 

 

三 info

 

info ls：和man page类似，比man page多一个功能，可以链接，带*号的，按回车链接可以过去，Shfit+u返回

 

四 ReadMe文件

 

软件全套的RedeMe文件：ls /usr/share/doc/XXX

 

[root@wentasy root]# ls /usr/share/doc/

Display all 729 possibilities? (y or n)

 

 

五 howto文档

 

http://tldp.org/HOWTO/HOWTO-INDEX/howtos.html

 

http://man.chinaunix.net/linux/how/HOWTO-INDEX-3.html

 

tldp.org

http://tldp.org/

 

六 Google

 

Google：适合英文关键字，推荐使用，多翻几页可以翻到英文的帮助文档

 

七 百度

 

Baidu：适合中文关键字

 

记住这句话：

 

菜鸟总是问别人，高手总是快速的寻求帮助。

 

 

 

 附几个快捷键

 

Ctrl + C：停止进程
Ctrl + Z：暂停
Ctrl + L：清屏
Ctrl + S：不管输入什么没反应，直到输入Ctrl+Q退出此状态
Ctrl + R：追踪命令历史，搜索历史
 /-X：快速搜索，n顺序往下查找，shift+N往上查找
 

 

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