Question

How to check which process is using a port linux

Answer 1

To identify the process using a specific port in Linux, use the command "netstat -tuln | grep <port_number>".

Step-by-step explanation:

In Linux, you can determine the process using a specific port by leveraging the "lsof" command.

Use the following syntax: "sudo lsof -i :<port_number>".

This command lists all open files associated with the specified port.

The "-i" flag specifies the internet-related files, and ":<port_number>" represents the specific port you want to check.

For instance, to identify the process using port 80, execute "sudo lsof -i :80".

The output displays details such as the process name (PID), user, and the program utilizing the port.

This method aids in troubleshooting conflicts where multiple processes attempt to use the same port,

allowing you to terminate or reconfigure the relevant process to resolve the issue and free up the port for other applications.

Answer 2

To check which process is using a port in Linux, you can use the "lsof" command followed by the specific port number, like "lsof -i :<port>." This will provide detailed information about the process using the specified port.

Step-by-step explanation:

The "lsof" command stands for "list open files" and is a powerful tool in Linux for examining information about files and processes. When used with the "-i" flag and the port number, it specifically shows the processes associated with that port. This information includes the process ID (PID), user, and the command that initiated the process.

Understanding how to use command-line tools like "lsof" is essential for troubleshooting and managing processes on a Linux system. It allows users to identify and address issues related to port usage and potential conflicts.