How to check which process the port is occupied by linux

1. lsof -i: port number

2. netstat -tunlp|grep port number

You can view which process the specified port is occupied by

Tools/Materials

 

• linux, windows
• xshell

method/step

 

1.  

   [Step 1] lsof -i

   lsof -i is used to display eligible processes, lsof (list open files) is a tool that lists the current system open files. Execute the lsof -i command as the root user , as shown below

   
2.  

   [Step 2] lsof -i: port number

   lsof -i: port number, used to check the occupancy of a port, such as checking the usage of port 22, lsof -i: 22, as shown below

   
3. 3

   [Step 3] netstat -tunlp

   netstat -tunlp is used to display tcp, udp ports and processes, etc., as shown below

   
4. 4

   [Step 4] netstat -tunlp|grep port number

   netstat -tunlp|grep port number, used to view the process status of the specified port number, such as viewing the situation of port 22, netstat -tunlp|grep 22, as shown below