Linux CentOS Learning Note--01

The company now requires learning Linux, and now just learned a few simple commands, will go to the 51CTO to see, the book is not to see in.

Here are the study notes:

1, Clear Screen command

Clear

Reset is all the content on the screen is erased

Alias set name alias Cl= ' Clear ' directly with CL

2, Switch User

Su root and enter the password

3, set the system host name

Hostname Host Name

Hostname Display host name

4, shutdown, restart, logoff

Shutdown Init 0 shutdown-h now

Restart init 6 Shutdown-r now reboot

Logoff logout (to be in command mode)

5,ls to display files and subdirectories within a folder

Ls

LS-A display. The file that begins with

Ls-s Show all the space for each file

6,CD Switching directories

Cd..

CD/

CD ~

Cd

Cd/usr/bin

7.mkdir Creating a Directory

mkdir Tool

8,rmdir Deleting a directory

RmDir tool

9.CP Copy command

CP data1.txt data2.txt copy Data1.txt to Data2.txt

CP data.txt/tmp/data Copy the data.txt to the/tmp/data directory

-V To display the command execution process

-r copy to all files and directories in directory

10,RM command to delete a file or directory

RM myfile

RM *

RM Myfile-f will delete files directly, no longer ask, force delete

RM myfile2-r deletes files and directories directly from the directory and the system no longer asks

Rm-rf myfile

Rm-v myfile Show Removal process

11,cat Command Connection File

Cat Data.txt More page to display data content

DAT data.txt >> data1.txt append data.txt file contents to the contents of the Data1.txt file

Cat data.txt data1.txt >new.txt data.txt data1.txt synthesis new.txt file

12,MV moving or replacing files, directory names

MV A.txt.

MV Z.txt Y.txt renamed Z.txt to Y.txt

MV Backup.

13,PWD Display the current directory

Pwd

Pwd-p Show actual path instead of using link path

This article from "Little Tiger" blog, declined reprint!

Linux CentOS Learning Note--01