View commands in Linux help Daquan

This article shares the help of Linux commands

Help, Info, Whatis, man

First, let's introduce what are internal commands and external commands.

Internal command: command from the shell itself

External command: User installation software is generally installed.

View a list of all internal commands in the system [[email protected]/]# Help

1. Help

Help internal command

External command--help or external command-H

2. Info information

Features: View the source, function, options, and so on of the command.

[[Email protected]/]# Info ls

3, Whatis View the purpose of the command

[[email protected]/]# Whatis ls

LS (1)-List Directory contents

LS (1p)-List Directory contents

P:posix standard Portable Operating System interface

4. man ******* manual: Manual

"Trouble finding a man."

Man command--view Help for commands

Man 5 File name--view Help for some files

[[email protected] ~]# man Mans

MANUAL SECTIONS

1 User Commands Users command

5 File Formats and conventions

File formats and conventions

8 System Administration Tools and

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View commands in Linux help Daquan