You can change a Slackware box's
hostname by two methods:
2) Use the hostname command-
- On any running Linux system you can change its hostname with the command ‘hostname‘.
hostnamewithout any parameter it will output the current hostname of the system.
hostname –fwill output the fully qualified domain name (or FQDN) of the system.
hostname NEW_NAMEwill set the hostname of the system to NEW_NAME. This is active right away and will remain so until the system is rebooted (because at system boot it sets this from some particular file configuration - see bellow how to set this permanently). You will most probably need to exit the current shell in order to see the change in your shell prompt.