Linux Man Command related

The meaning of the number represented by the man command

1. View by Man 7 Mans

1 commands or executable files that the user can manipulate in a shell environment such as which

2 system core can call functions and tools, etc.

3 some commonly used functions and function libraries (library), most of which are C (libc) such as malloc

4 Description of the appliance file, typically in/dev files such as null

5 configuration files or the format of some files

6 games

7 Description of conventions and protocols such as Linux file system, network protocol, ASCII code, etc.

8 Administrative commands available to system administrators

9 Documents related to kernel

2. Man file storage Path

/usr/share/man