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What command does linux have to check the port status? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

The parameters of the netstat command are described as follows:

-a: list all network status, including Socket programs

-c seconds: specify how often the network status is refreshed

-n: displayed with IP address and port number, not domain name and service name

-p: displays PID and program name

-t: displays the connection status using the TCP protocol port

-u: displays the connection status using the UDP protocol port

-I: only connections that show listening statu

-r: displays the routing table

The netstat command is combined with grep to view a specific port and service.

Netstat-ntlp / / View all current tcp ports netstat-ntulp | grep 80 / / View the usage of all 80 ports netstat-anp | grep 3306 / / View the usage of all 3306 ports

Check which services and ports are on a server

Netstat-lanp

Check how many ports a service has. For example, to check mysqld

Ps-ef | grep mysqld

Check the number of connections on a port. For example, port 3306

Netstat-pnt | grep: 3306 | wc

View the connection client IP for a port. For example, port 3306

Netstat-anp | grep 3306

View network port

This is the answer to netstat-an's question about what command to check the port status of linux. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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