man to get help
1. The basic syntax
man [ command or configuration file ] (Function Description: Get help information)
2. Display Description
Table 1-6
| information |
Features |
| NAME |
Name and one-line description of the command |
| SYNOPSIS |
How to use the command |
| DESCRIPTION |
In-depth discussion of command functions |
| EXAMPLES |
Examples of how to use the command |
| SEE ALSO |
Related topics (usually the man page) |
3. Case practical operation
( 1 ) View ls command help information
[root@hadoop101 ~]# man ls
help get shell built-in commands help information
1. The basic syntax
help command (Function Description: get shell built-in command help information)
2. Case practical operation
( 1 ) View cd command help information
[root@hadoop101 ~]# help cd
Keyboard Shortcuts
Table 1-7 Keyboard Shortcuts
| Keyboard Shortcuts |
Features |
| ctrl + c |
Stop process |
| ctrl+l |
Clear the screen; the screen is completely clear: the RESET |
| ctrl + q |
drop out |
| Good at using the tab key |
Tip ( more importantly to prevent mistyped ) |
| Up and down keys |
Find command is executed |
| ctrl + alt |
linux and Windows to switch between |