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This article mainly introduces the usage examples of 8 commonly used commands in Linux. The introduction in this article is very detailed and has certain reference value. Interested friends must read it!

1.cd

Man cd

Description: switch directories

Common parameters:

Directly use cd [directory]

Example:

Change to the bluseli directory

Cd / home/bluseli/

Cd. / home/bluseli/

Switch to the bluseli user directory

Cd ~ bluseli

Switch back to the user's home directory

Cd

Cd ~

Switch between folders and table to view the files under this folder twice.

Cd / home/ + twice table

Switch back to the root directory

Cd /

Switch to the previous directory

Cd..

Resume the last operation

Cd-

2.pwd

Man pwd

Pwd [- L |-P]

Description:

Displays the full path (absolute path) of the current directory

Common parameters:

-L

Show the path to the connection file

-P

Displays the path to which the connection file is connected

Example

Show current path

Pwd

There are no connection files in this folder, so the display is the same

Pwd-L |-P

3.ls

Man ls

Description: displays information about directories and files

Common parameters:

-l

List the details of the file / directory

-a

List all files (show hidden files)

Example:

Show the file name under the current folder

Ls

Show all child files under the current path

Ls-l

List in detail the contents of the current path in long format

Ls-a

Show all child files under the current path (including hidden files to. File at the beginning)

Ls-al

Show files in the / home directory

Ls / home

Displays the details of all files in the / home directory

Ls-al / home

4.mkdir & rmdir

Man mkdir

Description:

Create a directory

Common parameters:

-m

Create a directory and set permissions

-p

Recursively create a multi-tier directory

-v

Return to the prompt to create a directory

Example:

Create an empty directory

Mkdir dir1

Create multiple empty directories dir1 dir2 dir3

Mkdir dir1 dir2 dir3

Create a directory dir1 under / home/bluseli

Mkdir / home/bluseli/dir1

Create a directory dir1 under / home/bluseli and set the permissions of the directory to test2

Mkdir-m 777 / home/bluseli/dir1

Create / dir1 under / home/bluseli and then create dir2 (/ home/bluseli/ dir1/ dir2) recursively after dir1 is created

Mkdir-p / home/bluseli/ dir1/ dir2

Create three layers of information successively under / home/bluseli and return information

Mkdir-vp / home/bluseli/dir1/ dir2/ dir3

Create dir2 dir3 dir4 under dir1

Mkdir dir1/ {dir2, dir3, dir4}

Rmdir

Man rmdir

Description:

Delete folder (empty folder)

Common parameters:

-p Recursively delete a multi-tier empty folder

Example:

Delete test4 under / home/bluseli/test3

Rmdir / home/bluseli/test3/test4/

After deleting test7, test6 is empty, test6,test5 is empty again, and test5 is deleted again, but there are other files in bluseli that cannot be deleted if it is not empty

Rmdir-vp / home/bluseli/test5/test6/test7/

Delete test4 test5 test6 under / home/bluseli at the same time

Rmdir test4 test5 test6

5.rm

Man rm

Description:

Delete a file or directory

Common parameters:

-f

Ignore files that do not exist and no warning messages appear

-I

Default call that prompts you whether to delete the file

-r

Recursive deletion deletes everything under this folder

Example:

Delete a single file

Rm test1

Delete multiple files

Rm test1 test2 test3

Delete files in the specified directory

Rm / home/test

Delete folder dir1

Rm-r dir1/

Delete multiple folders dir1 dir2

Rm-r dir1/ dir2/

Delete the folder dir1 under the specified directory

Rm-r / home/dir1

Force deletion of test3,test3 non-empty

Rm-f test3

Delete all .c files under test2

Rm. / test2/*.c

6.ps & top

Man ps

Description:

View current process dynamics

Common parameters:

-m

Display memory information

-w

Show widening to show more information

-a

Show all users

-u

Display by user name and startup time order

-x

Show the process without a control terminal

-l

Display as a long list

Example:

Ps-aux to view the processes of other owners

Top

Man top

Description:

Process real-time monitoring

Common parameters:

Example:

Top

7.kill

Man kill

Description:

Force to stop the process

Common parameters:

Example:

Kill-9 process number

8.tar

Man tar

Description:

Packing and compressing

Common parameters:

Example:

Archiving and compression

Tar-cvzf archive filename files that need to be archived and compressed

Extract the archive file

Tar-the name of the archive file that needs to be extracted by xvfz

The above is all the contents of the article "examples of the usage of 8 commonly used commands in Linux". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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