linux--Common Commands

first, Linux common commands1. View the Help document A.--help

Linux command comes with help information

Example: LS--help # View the Help information for LS

B.man

Man is a handbook provided by Linux that contains most of the commands, function instructions

The manual is divided into chapters (sections), which can be used to specify different chapters to browse using man.

Example: Man ls; Mans 2 printf

The meanings of each section in man are as follows:

1. Standard commands (normal command)
2. System calls (systems calls, such as Open,write)
3. Library functions (libraries functions, such as Printf,fopen)
4. Special devices (description of the device file, various devices under/dev)
5. File formats (files format, such as passwd)
6. Games and toys (gaming and entertainment)
7. Miscellaneous (Miscellaneous, conventions and agreements, such as Linux file systems, network protocols, ASCII codes; environ global variables)
8. Administrative Commands (administrator commands, such as Ifconfig)

Man is searched in the order of chapter numbers in the manual.

The man set the following function keys:

function keys	function
Space key	Show the next screen of the man page
Enter key	One row of the scroll manual page
B	Roll back one screen
F	Roll forward one screen
Q	Exit Man command
H	List all function keys
/word	Search Word string

linux--Common Commands