033-03 unit2 Running Commands and Getting Help

033-03 unit2 Running Commands and Getting Help(运行指令和得到帮助)

 

 

1.running commands

2.somp simple commands

3.get help

4.the whatis command(查询指令的帮助)

5.the --help option

6.reading usage summaries(如何阅读指令的摘要)

7.the man command

8.navigating man pages

9.the info command

10.navigating info pages如何操作info说明文件

11.extended documentnation

12.red hat documentation

 

1.  running commands

command [options] [arguments]

 

[options]

ls --all   和 ls -a的功能是一样的，但一个是二个-，一个是一个-。

-a-b-c 和-abc功能等同,得西

 

[arguments]

 

2.somp simple commands

data   display

eg:data +%D%T

 

cal日历

eg:cal

cal 2009

cal 1 2009

 

3.get help

 

don't try to memorize everything

many levels of help

(whatis

--help

/usr/share/doc

red hat documentation)

 

4.the whatis command(查询指令的帮助)

eg :whatis ls  花一s

 

5.the --help option

 

6.reading usage summaries(如何阅读指令的摘要)