netstat:tldr:888ce

The command "netstat --listening" is used to display all the network connections on a computer that are currently in a listening state.

When a program or service wants to receive incoming network connections, it opens a listening socket on a specific port. These listening sockets wait for incoming connections, allowing other devices or applications to establish a connection with them.

The netstat command is a built-in network utility available on most operating systems, including Windows, macOS, and Linux. It provides information about network connections, routing tables, and various other network statistics.

By running "netstat --listening", you are requesting netstat to display all the listening TCP and UDP connections on the computer. The output will typically include information such as the protocol (TCP/UDP), local address and port, and the program or process associated with that connection.

This command is often used for troubleshooting network issues, identifying which programs are listening on specific ports, or detecting any unauthorized services running on a machine.