最近搜素一些linux的资料,在MAN帮助文档里经常看到BIND(2),SELECT(2),NC(1)这样的命令,但我一直没搞明白每个命令后面的小括号里带的数字是什么意思。今天google一番,总算明白了:


MANUAL SECTIONS
    The standard sections of the manual include:

    1      User Commands
    2      System Calls
    3      C Library Functions
    4      Devices and Special Files
    5      File Formats and Conventions
    6      Games et. Al.
    7      Miscellanea
    8      System Administration tools and Deamons
小括号里的数字,就是一个man的分类号

 

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