Linux下寻求帮助

淡淡的烟草味﹌ 2022-02-20 03:29 190阅读 0赞

### 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                            documentation that exists is outdated  already.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_tldp.org_HOWTO_HOWTO-INDEX_howtos.html]

[http://man.chinaunix.net/linux/how/HOWTO-INDEX-3.html][http_man.chinaunix.net_linux_how_HOWTO-INDEX-3.html]

tldp.org

[http://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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[http_tldp.org_HOWTO_HOWTO-INDEX_howtos.html]: http://tldp.org/HOWTO/HOWTO-INDEX/howtos.html
[http_man.chinaunix.net_linux_how_HOWTO-INDEX-3.html]: http://man.chinaunix.net/linux/how/HOWTO-INDEX-3.html
[http_tldp.org]: http://tldp.org/