Shulou(Shulou.com)06/02 Report--

Xiaobian to share with you about the linux basic command details, I hope you read this article after the harvest, let us discuss it together!

Linux basic commands are: 1, pwd to display the current path;2, rmdir to delete empty directory;3, ls to view directory or file information;4, vi to text editor;5, cp to copy;6, mv to move;7, rm to delete files or directories;8, find to find files.

Linux basic commands are:

1. pwd: Show current path

cd: switch directories

Usage: CD

cd ../ Switch to parent directory

cd /Switch to root directory

cd ~(or cd only) Switch to the current user's home directory (folder named after the user under home) /root directory

mkdir Create directory

mkdir directory name-p recursively create directory

2. rmdir: Delete empty directories

Usage: rmdir directory name

Also available: rm -rf directory name

3.ls: View directory or file information

Main options:

-l Lists directory or file details. such as permissions, modification times, etc.

-a Lists all files in the current directory, including hidden files (all hidden files are marked at the beginning)

4.vi Text Editor

Type i to enter edit mode

Press ESC to exit editing

Don't save exit: :q!

Save Exit: :wq

Enter/to enter search

Enter:set nu to display the number of rows per row

Press the G key, you can directly locate to the end

5. cp replication

Usage: cp [options] File name or directory destination address

-R Copy directories and all directories and files under directories

cp a.txt b.txt Copy file a and rename file b (directory name)

6.mv Mobile

Usage: mv file name or directory destination directory

mv a.txt ../ Move a file to a parent directory (move one file to another without renaming)

mv a.txt ../ b.txt Move a file up one level and rename it b file (move a file to another directory and rename it)

7.rm Delete a file or directory

-f Forced deletion

-r Delete directory

Common: rm -rf file or directory

8. find Find files

Usage: find [path] [option]

Common options are:

find . -name *.log Finds files ending in.log in the current directory

find / -name log Find the directory named log in the root directory

9. grep filtering

Finds a character (string) in the specified file and prints the line

Usage: grep string filename

grep band file Find the band string in file

10.cat Display text file content

Usage: cat file name cat file name

11. Head Look at the first few lines

Usage: head -n 5 filename

12. tail Writes a file to standard output from a specified point

tail -n 5 file name View the next few lines

tail -f error.log keeps refreshing to see the latest content

13.ps View progress (dynamic)

-ef Displays all running processes and the command to start them

14. netstat View network status (short for net status)

netstat -apn View all ports

an, arrange output in a certain order

p indicates which process is calling

15.| pipe character (vertical line, English input method state shift+ keyboard on the|\）

Pipelines between commands, taking the output of the previous command as the input to the subsequent command

Find tomcat process by command: ps -ef| grep tomcat

Find the process number occupying this port through the command: netstat -apn| grep 8080

16. echo Print or edit file content

Common options are:

-n No newline output

-e can use escape characters (\nEnter,\t tab)

Examples:

echo "I am studying linux">> xujun.txt Append the end of the file

echo $? If the return value is 0, the last command was successful. If it's between 1 and 255, it's a failure.

echo -e "wo\tshi\tshei"> xujun.txt

17. touch creates a blank file and updates the timestamp of the file if the same file exists in the current directory

-a Modify access time

-m modify (modify) time These two parameters can be understood

18. Uname View System

-m View how many bits the system is operating system

-r View the kernel version of the system

-a View detailed kernel versions and operating systems

19.rz upload

If you don't have this command in your system, use yum install lrzz to install

-y cover

Enter rz directly and you can upload files

20.sz Download

If you don't have this command in your system, use yum install lrzz to install

-y cover

sz -y test.txt

21.su Switch Users

su root

22. history View command history

23. chmod permission grant command

-R Recursively change permissions on all subdirectories and files in a directory

Number: r=4 w=2 x=1

chmod 777 lemon

24. tar decompression, compression tar.gz

tar -czvf test.tar.gz test

Compress the test folder to test.tar.gz

tar -xzvf test.tar.gz

Unzip test.tar.gz to get the test folder

25.zip unzip, zip

zip -r test.zip test

Zip the test folder to test.zip, you must have r to compress the file, otherwise an empty folder will be generated

unzip test.zip

Extract the test.zip folder

26. turn off the firewall

Open: service iptables start

Close: service iptables stop

27. View files from end to end

tac

28. shutdown

Permanently turn off the firewall

Open: chkconfig iptables on

Close: chkconfig iptables off

After reading this article, I believe you have a certain understanding of the detailed explanation of the basic Linux commands. If you want to know more about it, welcome to pay attention to the industry information channel. Thank you for reading!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.