What does the `docker network ls` command do?

The command docker network ls is specifically designed to provide a list of all the networks that have been created in Docker. When executed, it displays pertinent information such as the network ID, name, driver, and scope of each network. This is essential for users who wish to manage container networking, as it allows them to see which networks are available and in use.

To understand why this command uniquely serves this purpose, it's important to note that other commands are utilized for different functionalities in Docker networking. For instance, creating networks is achieved using a different command that specifies network creation parameters, while removing networks involves a command that targets specific networks for deletion. Additionally, connecting containers to networks is accomplished with a command focusing on establishing the relationship between a container and an existing network. Thus, docker network ls stands out as the definitive command for listing all networks.