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Editor to share with you what the commonly used linux instructions are, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Linux common operation instructions

1. Text operation

% s / replace string object / replace target string

% s/aaa/sss replaces all aaa in the text with sss

/ find string

/ 123 find 123 in the text (n next N last one)

A starts inserting one bit after the cursor

An insert at the end of the line

I insert at the front of the row

Gg jumps directly to the first line of the file

G jumps directly to the last line of the file

Dd deletes lines, or if 5dd deletes 5 lines after the cursor at once

If yy copies the current line and multiple lines, 3yy copies 3 lines near the current line

P sticker

V enters character selection mode. Press y to copy and p to paste when the selection is complete.

Ctrl+v enters the fast selection mode, press y to copy when the selection is complete, and press p to paste

Shift + v enter row selection mode, press y to copy and p to paste when the selection is complete

More filename (space) turn one page under b and turn one page up

Less direction key up one line direction key down the next line

Cat gets all the text (spaces) at once and flips down one line (b) one line down

/ keyword search keyword

Tail-10 xxx.log look at 10 lines

Tail-f xxx.log

Tail-F xxx.log

Normal mode shift + z save exit text twice

First 10 lines of head 10 filename file

2. Backend service

Source / etc/profile / / after configuring the system files, you need to load the configuration once with source

Service View Service instruction (linux Service Control) services.msc (windos Service Control) mspaint (windows Sketchpad)

Service-- status-all / / View all backend running services

Service network start / / Network Card enables network to replace specific services

Service network stop / / Nic shuts down

Restart the service network restart / / network card

3. Firewall 6.0

Chkconfig to view the self-starting configuration of all backend services

Chkconfig iptables off turns off the automatic startup of the specified service. Here the service is iptables Firewall.

Chkconfig iptables on enables the automatic startup of the specified service. Here, the service is iptables Firewall.

4. System startup level management

Vi / etc/inittab

Turn it off together

1 single user

2 nfs shared folders are not supported by multiple users

3 full-function multi-user mode

4 unused is useless

5-x11 graphical interface desktop version

6 restart

5. Compress and decompress related commands

Tar.gz

Compressed tar-cvf myfirsttarball.tar 1.txt 2.txt 3.txt 4.txt

Decompress tar-xvf myfirsttarball.tar

6. Complete the packaging and compression operation at one time

Compress tar-zcvf my.tar.gz / somefile

Decompress tar-zxvf my.tar.gz

-C specifies the directory to which your package is to be unzipped

For example: tar-zxvf my.tar.gz-C / tmp/ is to extract to the tmp directory!

7. What is the meaning of zxvf in the decompression command tar zxvf

X: extract files from the tar package

Z: indicates that the tar package is compressed by gzip, so you need to decompress it with gunzip.

V: show details

F xxx.tar.gz: specifies that the file being processed is xxx.tar.gz

8. Local production of YUM

Install httpd and confirm to install the associated

Yum install-y httpd

List all available package and package groups

Yum list

Be aware of all cached data

Yum clean all

List a package with all dependent packages

Yum deplist httpd

Remove the httpd software

Yum remove httpd

Each file represents a source

Cd / etc/yum.repos.d

File:// local source

Http:// network source

9. View the packages that have been installed by linux

Rpm-qai | grep mysql

-Q query (- Q is to query specific objects such as rpm-Q mysql)

-an all queries all

-I package information

10. View the port

Detailed Analysis of netstat and its conditions

Netstat is used to print the status information of the network system in Linux, so that you can know the network situation of the whole Linux system.

Netstat-nltp

Httpd startup can directly web access port default 80

11. Firewall

Service iptables status

Service iptables start

Service iptables stop

Chkconfig iptables on boot up

Chkconfig iptables off boot does not start

Firewall-cmd-- state # View the default firewall status (show notrunning when turned off and running when turned on)

The above is all the contents of the article "what are the common linux instructions?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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