I. File directory and operation
1, ls: used to display a list of files and subdirectories in the current directory
Ls-a: Can list files that begin with.
Ls-s: You can display the space occupied by each file, plus the "-S" parameter, you can arrange the display by the space size
ls ${path}: A list of files and subdirectories that can display the path followed
2. CD ${Path}: Allows the user to switch to the current directory
Cd.. : Go back to the top level directory
CD ~: Back to home directory
3. mkdir: Create directory
4. RmDir: Delete Directory
5. CP: command to copy files
Cp-f/-r $[copied file] $[the path to be copied to]
Where the-f parameter means that a single file is copied, and the-R parameter is a copy folder and its subdirectories
6, MV: The command to move the file
Mv-f/-r $[moved file] $[the path to be moved to]
This command can also be used as a rename
7. RM: Delete File command
rm-f/-r $[deleted files]
RM *${deleted format} All files in this format are deleted in the current directory
8. PWD: Displays the directory where the user is currently located
ii. installation and update of files
1. Update package: sudo apt-get update (This command will update all packages)
2. Installation software: sudo apt-get install${file name}
3. Install the Deb package:Sudodpkg-i ${package name. Deb}
three . View computer Information
1. Top: View Current process
2. Cat/proc/cpuinfo: View CPU Information
Iv. Text Manipulation
1. Sed ' s/stringa1/stringa2/g ' example.txt replace "string1" in Example.txt file with "string2"
Linux frequently used commands, not updated regularly
