Linux Common Commands

Linux Common commands

Show directory and File commands

LS: Displays directories and files under the specified directory

ls [option] Directory name

Ls-a: List all files in the directory

ls-d: Show directory, do not display directory files

Ls-i: Display the index point of a file

Ls-k: File size in bytes

Ls–l: Listing details of a file

Ls-r: Displays the contents of the specified directory and sub-directory

Ls-t: Sort by Time

Ls-a: File size sorting

Show file Contents command

Cat [Options] File name

Cat-n: Number of lines starting from 1 for all outputs

Cat–b: Similar to-N,-B does not number blank lines

Cat–s: When there are more than two rows of blank lines, replace them with a blank line

More commands

more [options] [filename]

More–num: Number of rows displayed at one time

More +num: Starting from the first few lines

More-s: When you meet more than two lines of blank line is replaced by a row

Less Pagination Display Commands

less [options] [filename]

Less–n: Show Remove line number

Less-s: Compressing multiple empty rows into a blank line

Head Command

Head [options] File name

Head–c: How many bytes before the file is displayed

Head-n: How many lines before the file is displayed

Head-q: The file name is not displayed before displaying the contents

Head-v: Displays file names before displaying the contents of the files

Tail command

tail [options] File name

Tail-c: Displays the number of bytes after the file

Tail-n: How many lines are displayed after the file

Tail-q: File name is not displayed before displaying files

TAIL-V: Show file name before displaying files

TAIL–F: Dynamic display of n-line content at the end of a file press CTRL + C to terminate the display

mkdir command

mkdir [Options] [file name]

Mkdir–p: Ensuring the existence of directory names

rmdir [Options] [directory name]

RmDir: Delete Empty directory

Rmdir–p: When a subdirectory is deleted and then made empty, it is deleted

Touch command

touch [Options] File 1 [File 2]

Change the file's time record to be the same as Install.log

RM command

RM [Options] [file name or directory]

Rm–i: Ask for confirmation before deleting

Rm–f: Even if the source file makes read-only, it is also deleted directly, do not need to ask each

rm–f–f*: Delete all files beginning with F

CD command

CD file name: Enter the folder

Cd ~: Current User home Directory

Cd.. Return to the previous layer:

PWD command

Show current user and working directory

CP command

CP [Options] [source file or directory] [destination file or directory]

Cp–r: Recursive continuous replication for directory replication behavior

Cp–f: Forced replication

Find cmin–n: Files read in the last few minutes

Find–ctime-n: Files read in the past few days

Find-name Name: Find file names that match name

Find–size: Search by File size

find-printf: Display files on standard output devices

find-cnewer [FileName]: file that is newer than [file name]

Find–type–f: Find files of a generic type

Find-mount: Checking and specifying directories under the same file system file

Find–ls: Detailed listing of the files you are looking for

Locate *.cfg: Find all. cfg files

LOCATE-H: Display auxiliary information

WC command

wc-c [Options] [filename]: Show file size

wc–m [Options] [filename]: Number of statistical strings

wc-l [Options] [filename]: Number of rows in the statistics file

Sort–u: Show non-repeating content

Sort–r: Reverse Sort

Clear: Perform a clear screen

Cat [file name] | TR "ABC" "XYZ": Replace related letters in standard output content

Tr ' A-Z ' A-Z ' < kong.txt: capitalization of standard input lowercase letters

Tar Package compressed file

Gzip format compression

Decompression hour compression frequency

Linux Common Commands