1. command format and directory processing command LS
Command format: command [-options] [parameters] Example: ls-la/etc (Note: Individual commands do not follow this format; when there are multiple options, they can be written together; option parameters in brackets are generally ignored)
Command name: LS
Command English original: list
Command path:/bin/ls
Execute Permissions: All Users
Function Description: Display directory file
Syntax: LS [-options] [parameters] option:-A (All) displays all files;-L (long) displays details;-D view directory properties;-H to kb,mb display file size;-I file I node.
File types and Permissions
2. Directory processing commands
Command name: mkdir
Command English original: Make directories
Command path:/bin/mkdir
Execute Permissions: All Users
Syntax: mkdir-p [directory name]
Function Description: Create a new directory-P Recursive creation example: Mkdir-p/tmp/japan/boduo
Command name: CD
Command English original: Change directory
Command path: Shell built-in command
Execute Permissions: All Users
Syntax: cd[directory]
Function Description: Switch Directory example: Cd/tmp/japan/boduo switch to the development directory CD. /go to the top level directory
Command name: pwd
Command English original: Print working directory
Command path:/bin/pwd
Execute Permissions: All Users
Syntax: pwd
Function Description: Show current directory example: PWD
Command name: rmdir
Command English original meaning: remove emtpy directories
Command path:/bin/rmdir
Execute Permissions: All Users
Syntax: rmdir [directory name]
Function Description: Delete Empty directory example: Rmdir/tmp/japan/boduo
Command name: CP
Command English Original: copy
Command path:/BIN/CP
Execute Permissions: All Users
Syntax: CP-RP [Original file or directory] (can be multiple) [target directory]-r copy directory-p reserved File property
Command name: MV
Command English Intent: move
Command path:/BIN/MV
Execute Permissions: All Users
Syntax: MV [original file or directory] [target directory]
Function Description: Cut file, rename
Command name: RM
Command English original meaning: remove
Command path:/BIN/RM
Execute Permissions: All Users
Syntax: RM-RF [file or directory]-r Delete directory-F enforcement
Command name: Touche
Command path:/bin/touch
Execute Permissions: All Users
Syntax: touch [filename]
Function Description: Create empty file Example: Touch japanlovestory.list
Command name: Cat
Command path:/bin/cat
Execute Permissions: All Users
Syntax: cat [filename]
Function Description: Display file contents-N Display line number
Command name: more
Command path:/bin/more
Execute Permissions: All Users
Syntax: more [file name] (space) or F-page (Enter) line wrap Q or Q exit
Function Description: Page shows the contents of the file
Command name: Less
directory where the command is located:/usr/bin/less
Execute Permissions: All Users
Syntax: less [filename]
Function Description: Page shows the contents of the file (can page UP) example: less/etc/services
Command name: Head
Command path:/usr/bin/head
Execute Permissions: All Users
Syntax: head [filename]
Function Description: Display the first few lines of the file-n Specify the number of rows: Head-n 20/etc/services (not write-n default display first 10 lines)
Command name: Tail
Command path:/usr/bin/tail
Execute Permissions: All Users
Syntax: tail [file name]
Function Description: Display file After a few rows-n Specify the number of rows-F dynamic Display file End Content example: Tail-n 18/etc/services
Link command
Command name: LN
Command English original meaning: link
Command path:/BIN/LN
Execute Permissions: All Users
Syntax: ln-s [Original file] [target file]-s Create soft connection
Function Description: Generate link file
Ln-s/etc/issue/tmp/issue.soft
Create a soft link to the file/etc/issue/tmp/issue.soft
Ln/etc/issue/tmp/issue.hard
Create a hard link to the file/etc/issue/tmp/issue.hard
Note: Hard links can be identified through the I node, can not cross the partition, not for the directory use; The advantage of hard link: sync with new two files, one file deleted, another file still exists
Linux Common commands-File processing commands