Linux command line summary

1. pwd print working directory Print working directory

2. hostname my computer's network name The name of the computer in the network

3. mkdir make directory Create path

4. cd change directory Change path

5. ls list directory List the contents under the path

6. rmdir remove directory delete path

7. pushd push directory push path

8. popd pop directory push out path

9. cp copy a file or directory Copy the file (will directly overwrite the existing file) cp -r: Recursive copy, copy the files in the folder together

10. mv move a file or directory Move a file or path

11. less page through a file Browse the file page by page qExit viewing

12. cat print the whole file Print the entire file

13. xargs execute arguments

14. find find files Find files

15. grep find things inside files Find things inside files

1. man mannual page Read the manual

2. apropos find what man page is appropriate Find the appropriate man page

3. env look at your environment View environment

4. echo print some arguments Print parameters

5. export export/set a new environment variable Export/set a new environment variable

6. exit exit the shell

7. sudo become super user root Become a super user or root

8. chmod change permission modifiers Modify file permissions

9. chown change ownership Modify the owner of the file

10. #cd .. Return to the previous directory (there are spaces in the middle! )

11. cd "i have fun" Open a folder with a space in the name and use ""

12. cd i\ have\ fun/ to open For folders with spaces in the middle of their names, use \ to translate the spaces

13. cd ~ to return to the home directory (with spaces in the middle!)

14. cd . ./../.. Go up three levels of directories (the current directory is the first level)

15. mkdir -p creates a complete path, p means parent

1. touch Create new file

2. clear Clear screen

3. mv Rename file

4. rm Delete files

5. rm -rf -r or -R: Recursive processing, processing all files and subdirectories in the specified directory together ;

-f: Forced deletion of files or directories;

-i: Ask the user before deleting existing files or directories;

36. | The pipe command directs the output of the command on the left to the right

37.

38. > Writes the output of the command on the left Go to the file on the right

39. >> Append the output of the command on the left to the file on the right

40. * Wildcard character. *.txt - Any file ending with txt

41. find For example: find . -name "*.txt" -print | less Find all files ending with txt and output them to the screen, use the less command way to view. The computer will record all content that meets the conditions in the current folder and subfolders.

42. After the cat > newfile.txt command is executed, the characters you type on the screen will be put into the newly created newfile.txt file. Press ctrl+d to end

43. grep global regular expression print: global regular expression. Search text using regular expressions and print matching lines.

44. man Use the command name to find related usage, such as man find, which will display the relevant parameters of the find command

45.apropos If you don’t know the command required to complete a specific task name, you can search for it through the Linux apropos utility using a keyword

46.env view environment env | grep huguagnqin env | less

47.echo is used to print the shell in the shell The value of the variable, or directly output the specified string

48.export

49.xargs

50.sudo allows the user to run a command with super user privileges

51.su Enter the super user authority exit and switch directly back to the ordinary user

52.chmod

53.chown

54.exit Exit the command line

55. Shutdown command poweroff

halt

shutdown -h now (for root user)

56.reboot Restart

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