Linux basic commands

Online about the Linux command a lot of detailed, I will put some common commands to collect and paste it, for everyone to view (note: Will simply mention, the specific operation please see the relevant information)

1. Add: A. File touch filename

B. folder MkDir folder

C. User AddUser new user (after adding "passwd new user" to modify the password, should be added under the root user)

2. Delete: A. File rm-f filename

B. Folder Rm-rf folder

C. User Userdel user name (use "Userdel-r username" to delete users and delete their home directories and files)

3. Modify: Use the VI command to enter the file and modify the content after using ": Wq" or ": X" to save the modified file content, if not modified using ": Q" exit, if modified but do not intend to save use ": q!" Exit

4. Query: Use cat file name to view

Use tail file name to view

5. Clear the screen: clear (very common command)

6. Switch directory: CD directory name (only use CD will switch to the current user's home directory)

7. Compress the file into a package:TAR-ZCVF package name. tar.gz Folder

8. Unzip the package: TAR-XZVF package name. package name suffix

9. View process: Ps-auwx (followed by "grep xxx" can be filtered, xxx for you to query the keyword)

10. Kill Process: Kill-9 process Number (process number can be queried by 9th command, process number is the second column found)

11. View all the files under the folder: Ls-i (LS is a common use)

12. Modify file Folder permissions chmod + permission number file or folder (+--that is, to cancel a permission, = to overwrite other permissions with this permission)

Linux basic commands