1. seek help in linux is a good habit, fortunately system has helped the command man and info, because a lot of linux commands, memory up almost trouble, such as a directive to begin with there are 100, linux command count thousands of them have, but it is troublesome memories
2. We can use the system to help us --help, as I understand the ls command, you can enter ls --help
3.man good for use, the back of the instruction DATE 1 represents a general user can use
4. Similarly DATE (1) in a number of different means have different numbers, the following approximate
5. Use the / and in the man page? Look up and down may be implemented as a string using the date search date / date
6.man of keywords to find the man -k + keyword you're looking for; the documentation system will contain the keyword to the man listed
7.whatis + instruction or instruction apropos +'re looking to find; apropos ls ls will contain all listed to
8. The info use, substantially, info man with almost the same purpose, the use of a query command or file format are used. But the man page
Breath bunch of different information is output, info page sucked down into a data file of one of paragraphs, each with its own page
surface to write, pagination is displayed as a percentage
9. to demand help in the doc directory: / usr / share / doc
10. Many original software release, that they will have some installation instructions, is expected to work matters, future planning, etc. things,
as well as including installed programs, etc. These documents are also placed in the / usr / share / doc among Oh! And / usr / share / doc directory
data in the mainly Kit (packages) dominated, such as information papo the software in
/ usr / share / doc / papo -xxx ( xxx represents the version that means!)
11.在终端机模式中，如果你知道某个指令，但却忘记了相关选项与参数，请先善用--help 的功能来查询相关
信息；
当有任何你不知道的指令或文件格式这种玩意儿，但是你想要了解他，请赶快使用man 或者是info 来查询！
而如果你想要架设一些其他的服务，或想要利用一整组软件来达成某项功能时，请赶快到/usr/share/doc 底
下查一查有没有该服务的说明档喔！
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