Linux Command Personal Summary

mkdir make directories Create an empty directory

Parameter-P recursive creation

Example: mkdir test.txt

CD switch directory CD ~ Home directory (current user) CD: Previous directory to CD-last in the directory

Example: CD/CD ~ CD.

LS Display directory or file

Parameter-a All files (hidden)-D directory-L detailed parameters

Example: Ls-a

VI = Notepad ESC switch to command mode I toggle input mode

command to enter: (Q exit Wq Save exit =x q! Force not to save exit wq! Force save exit)

Display lines: Set NU dd Delete when line yy copy when line P sticky line number +gg Navigate to the line shut+g locate file end GG to file header

VI test.txt

Cat View File contents TAC Reverse output

Parameter-n shows the number of rows

Example:

Cat >>test.txt<<eof multiple row append cat single line with Echo

Ddddddd

Ddddddd

Eof

Append to end > Replace All

CP Copy files or directories

Parameter-a=-dpr-d link-p Modify time and permissions-R recursion

Example: cp-dpr/oldboy/tmp

MV Move file or directory (renamed)

-T

Example: MV Test1.txt test2.txt Test3.txt Oldboy put three in Oldboy

Mv-t/oldboy2 test1.txt Test2.txt Test3.txt put three of them in Oldboy2

RM Delete a file or directory

Parameter-R Recursive Delete-F Force Delete

RM-RF Test.txt

Head shows the file header-N line number

Example: head-10 test.txt display first 10 rows

Tail show file trailing-n line number-F track tail latest changes

Example: tail-10 test.txt display tail 10 lines

Tail-f Test.txt

For-n in ' seq ';d o echo $n >>test.txt;sleep 1;done

grep filters out the content you need

Parameter-V exclusion-E multiple | split-I ignore case

Example: Grep-v test.txt

Sed to take the line

Parameter-n cancels the default output (filtered only)-p print-D Delete

Example: Sed-n 20,30p test.txt 20-30 Lines

Sed-n/^2/p Test.txt begins with 2

Awk's got a bad list.

Awk-f ":" ' {print $} '/etc/passwd to: Split the first $ all

awk ' {if (nr>19&&nr<31) print $} ' test.txt

Alias temporary alias (restart reset) 1: Protection against Misoperation 2: Responsible for command combination string simplification

Example: 1:alias cp= cp-i

2:alias 1= ' echo ' I am Oldboy "'

Permanent aliases: ~/.BASHRC (~ User home directory) or/ETC.BASHRC modified

Which view command path =where is

Find Files or directories

Parameter-type class (f file D directory)-name "ddd" by name-mtime by modified time

Example: Find/-type f-name test.txt

Tree view directory Structure tree/

Xargs is used to give the output of the find/ls to the back processing

SEQ Print sequence Seq5 =echo{1..5}

Parameter-s Specifies the separator

Example: seq-s = 5 seq 1 3 > Test.txt seq >>test.txt

Man query Command usage instructions

Example: Man CP

Touch Create file or modify file timestamp

Touch 1.txt

PWD Displays the current path

History View historical record (command)

Parameter-C clears the-D line number Delete

Example: History-c history-d 2

Diff Compare Text content difference-C context output format

Example: Diff-c 1.txt 2.txt

Useradd adding users

passwd Change Password

Parameter--stdin Modify-S query state-D Delete-L lock-u unlock-f force

Example: passwd--stdin 001

W shows the current logged on user, when to log in, what to do

SU Switch User

Example: su-001 Su-Switch to root

sudo gives normal users root privileges

Example: Normal user, using the front of the command plus SU

Yum Package management tool to resolve RPM package dependencies

Example: Yum-y instll MySQL

RPM Software Installation command General-IVH installation

parameter-I display document-V Display execution procedure-H list tags when installing

Chkconfig View the boot-up software you set up

Parameter--add Add service--del Delete--list list--level run level

Example--add httpd--list mysql--level mysqld on

Netstat Viewing network status

Parameters:-A All-L in Listen-n deny display alias, can digital display converted to a number,-TTCP-UUDP-P program name

Example: Netstat-lntup

Lsof list The process of the currently open file (find who is using the file) (Recover deleted files)

Parameter:-C program name-P pid-u uid or user name ^ take against meaning-I port

Example 1:LSOF/ETC/PASSWD lsof-c Tomcat Lsof-u^root lsof-i:80

Example 2: Check for a process that has not been opened after deleting the file by mistake

# lsof |grep/var/log/messages

SYSLOGD 1283 root 2w REG 3,3 5381017 177364/var/log/messages (Deleted)

# head-n 10/PROC/1283/FD/2 See if previous file contents

CAT/PROC/1283/FD/2 >/var/log/messages

Chattr changing file properties

Parameter + Append Property-Remove attribute = Update Property

A can only add data can not be deleted more for the log system, I can not change any properties and content, more advanced security

Example: Chattr +i/etc/resolv.conf

Lsattr Viewing file properties

Zip compressed file or directory

Parameter:-r recursive-d delete a file in a compressed file-m add to the compressed file----X compress when draining

Example: Zip-r 1.zip./* Compress all contents of the current directory zip 1.zip 1/* Compressed directory 1

Example: zip-d 1.zip 1/1.txt Delete compressed file 1.txt zip-m 1.zip 1/1.txt Add 1.txt

Example: Zip 1.zip 1/*-x 1/1.txt compression directory 1 when ignoring 1.txt

Unzip unzip the zip file

Parameter:-D extract to Where-n does not overwrite the original file-o overwrite the original file-V view content but do not understand the pressure

Example: Unzip-n (or-O) 1.zip-d/tmp unzip-v 1.zip

Tar package file or directory

Parameter:-F name-C package-X unzip-T view-r append Content-Z has gzip-c bz2-u Update-v process

Example: TAR-CF 1.tar. *.jpg to package all JPG files in the current directory

Example: TAR-TF 1.tar view tar-rf 1.tar *.gif append GIP file to 1.zip

Example: TAR-XF 1.tar extract to current directory tar-uf 1.tar 1.jpg update 1.jpg Content

Example: Tar-cvzf 1.tar.gz *jpg package All JPG files in the current directory with gzip compression

Example: TAR-CVJF 1.tar.bz2 *jpg packaging all JPG files in the current directory and compressing them bzip2

Example: Tar-cvzf 1.tar. Z *jpg package All JPG files in the current directory and compress them with compress

Date View or modification time

Parameter:-D Displays the-s setting

Example: date-d "1987-08-15 1000000 seconds" + "%y-%m-%d%h:%m:%s"

Example: Date-s "20160919 01:01:01"

Linux Command Personal Summary