The hostnamectl Command
hostnamectl command provides a proper API used to control Linux system hostname and change its related settings. The command also helps to change the hostname without actually locating and editing the /etc/hostname file on a given system.
hostnamectl [ OPTIONS ] COMMAND ....
Where COMMAND can be any of the following:
- status: Used to check current hostname settings.
- set-hostname NAME: Used to set system hostname.
- set-icon-name NAME: Used to set icon name for host.
- set-chassis NAME: Set chassis type for host.
Types of hostname:
- Static: Assigned by system admin and it is used to initialize the kernel hostname during boot time.
- Dynamic or Transient: Assigned by mDNS server or DHCP server during run time.
- Pretty: A high-level hostname assigned by system admin or end-user.
|--no-ask-password||Do not query the user for authentication for privileged operations.|
|-H, --host=||Execute the operation remotely. Specify a hostname, or a username and hostname separated by "@", to connect to. The hostname may optionally be suffixed by a port ssh is listening on, separated by ":", and then a container name, separated by "/", which connects directly to a specific container on the specified host.|
|-M, --machine=||Execute operation on a local container. Specify a container name to connect to, optionally prefixed by a user name to connect as and a separating "@" character. If the special string ".host" is used in place of the container name, a connection to the local system is made|