Hostname Command: Display and Set Hostname in Linux

The 'hostname' command is used to display or set the hostname of a computer.

To display the current hostname, simply type 'hostname' in the command line and press Enter.

To set a new hostname, use the 'hostname' command followed by the desired hostname. For example, to set the hostname to 'mycomputer', type 'hostname mycomputer' and press Enter. Note that changing the hostname usually requires administrative privileges.