79. In the Linux man manual, what does man (1) mean?

Man-H

Man, version 1.6c

Usage: Man [-adfhktww] [section] [-M path] [-P Pager] [-s list]

[-M system] [-P string] Name...

(1) indicates the optional parameter [section].

In the system, some system commands/system calls/ProgramThe database will be named again. In this case, the man can't guess which one you want to ask him?

As a result, these manuals are divided into eight categories:

Section description

1 General commands

2 system CILS

3 library functions, covering in the C standard library

4 special files (usually devices, those found in/Dev) and drivers

5 file formats and conventions

6 games and screensavers

7 Miscellanea

8 system administration commands and daemons

References:

[1]Http://en.wikipedia.org/wiki/Man_page

[2] www.zhihu.com/question/20219623