[state-Embedded notes] [005] [Detailed Linux commands]

User Management class commands

Add User: Useradd name

Delete User: Userdel-r name "-r" means to delete the corresponding user's directory

Change Password: passwd name

Switch User: Su-name "-" means that the switch user is brought into the environment variable at the same time

Add user group: Groupadd name

Delete user group: Groupdel name

File and Directory class commands

Clear screen: Clear

View table of Contents: LS name "-a" means show All Files "-L" to show details

Switch directory: cd name "..." Returns the previous directory "-" indicating that the last catalog was returned

Copy file: CP src DST "-r" means copy directory

Move or rename: mv src DST Delete file or directory: RM name "-r" means delete directory "-F" means Delete does not prompt

To change file permissions:

chmod who+mode Name

Who:u indicates that the file owner G represents the file all groups o means that other User a represents all users

mode:+ means Add permission-Represents a Cancel Permission = represents a given permission

Create directory: mkdir name "-P" indicates continuous creation of directories

View directory Size: Du name view current path: pwd

Compress packaging Commands

. Tar indicates files packaged with the tar command

. GZ indicates files compressed with the gzip command

. bz2 represents a file compressed with the BZIP2 command

Compression decompression

Compression: gzip name Bzip2 name

Decompression: gzip-d name bzip2-d name

Packaging compression

Package: Tar cvf newname.tar oldname

Unpacking: Tar xvf name

Package compression: Tar zcvf newname.tar oldname

Unpacking: Tar zxvf name

Disk Management class commands

Load device: Mount device name mount directory to convert device files to directories to access

Uninstalling the device: Unmount mount Directory

View Disk: Df-hl

Create File: Touch name

View File size: filename name

File Link: ln fliename linkname "-S" means creating a soft link, otherwise creating a hard link

Find Class command

Find File/directory: Find lookup path-name file name

Find the string in the file: grep "string" path "-rn" indicates the number of lines and filenames in the file that lists the string

Process Management class commands

View process: PS aux

Kill process: Kill PID

View Memory: Free

View CPU Share: Top

Miscellaneous commands

Software Management: RPM package "-IVH" means installation package "-qa" means to view installed packages "-e" means uninstalling installed packages

Pipe operators: Command 1 | Command 2 The output of the first command as input to the second command

View Help: Man command name

Shutdown: Shutdown now or Poweroff

[state-Embedded notes] [005] [Detailed Linux commands]