Linux entry record: Ten, Linux get help

First, get help

Linux provides extremely detailed help tools and documentation that can greatly reduce the need for memory and increase efficiency by looking at related documents.

Two 、--help parameters

Almost all commands can use the-h or the--help parameter to get the details of the command.

Three, man command

The man command enables the most common help commands in Linux, and the command to get help executes the man command as a parameter to obtain the appropriate documentation help. The man document is divided into many types:

Type	Describe
1	User commands
2	Kernel system calls
3	Library functions
4	Special file Devices
5	File formats and specifications
6	Game
7	specifications, standards, and other pages
8	System administration Commands
9	Linux Kernel API

Man- k keyword can be used to query documents that contain specific keywords.

Iv.. Info command

Info is similar to man, but the information provided is more in-depth and is displayed in a web-like format.

both man and info can be searched in the "/+ keyword " way.

V. Doc Directory

Many programs, commands with detailed documentation, in TXT, HTML, PDF and other ways to save in the/usr/share/doc directory, these documents are the most detailed documentation of the corresponding program. Windows may be a CHM document, and a PDF document may be under the MAC.

VI. Google

Yes, that's google!. ~

Linux entry record: Ten, Linux get help