What does the command 'hostname' do?

The command 'hostname' is used to display or set the system's hostname. The hostname is a label that identifies the device on a network. When executed without any arguments, the command shows the current hostname of the system, allowing users to easily identify their machine, especially in environments with multiple devices.

Moreover, this command can also be used with an argument to change the hostname of the system. Modifying the hostname can be crucial for network organization, making it simpler to manage devices and services.

Understanding this functionality is important for users working with networking and servers, as the hostname can significantly affect how devices communicate within a network.