Check the program that occupies a port in ubuntu

Run the netstat command to check the port usage of a program that occupies a port in ubuntu. View the connected service port (ESTABLISHEDnetstat-a) view all service ports (LISTEN, ESTABLISHED) netstat-ap view port 8080, you can combine the grep command: netstat-ap | grep 8080: If you want to view port 8888, enter lsof-I: 8888 in the terminal. To stop using this port, run the "top" command on the "terminal" using the kill + pid to view the tasks that occupy the most system resources. Press "q" to exit. Run "ps aux" to view all running tasks (called "processes "). If you want to find a specific process, you can run: ps aux | grep program name. If you want to end the process, you can run: kill-9 process number (process number is the four-digit number in the second column you see when running the ps command)