HOSTNAMECTL(1)

NAME
hostnamectl - Control the system hostname

SYNOPSIS

hostnamectl [OPTIONS...] {COMMAND}

DESCRIPTION

hostnamectl may be used to query and change the system hostname and related settings.

This tool distuingishes three different host names: the high-level "pretty" hostname which might include all all kinds of special characters (e.g. "Lennart's Laptop"), the static hostname which is used to initialize the kernel hostname at boot (e.g. "lennarts-laptop"), and the transient hostname which might be assigned temporarily due to network configuration and might revert back to the static hostname if network connectivity is lost and is only temporarily written to the kernel hostname (e.g. "dhcp-47-11").

Note that the pretty hostname has little restrictions on the characters used, while the static and transient hostnames are limited to the usually accepted characters of internet domain names.

The static host name is stored in /etc/hostname, see hostname(5) for more information. The pretty host name and icon name are stored in /etc/machine-info, see machine-id(5).

OPTIONS

The following options are understood:

--help, -h
    Prints a short help text and exits.

--version
    Prints a short version string and exits.

--no-ask-password
    Don't query the user for authentication for privileged operations.

-H, --host
    Execute operation remotely. Specify a hostname, or username and hostname separated by @, to connect to. This will use SSH to talk to a remote system.

--static, --transient, --pretty
    If set-hostname is invoked and one or more of these options are passed only the selected hostnames is updated.

The following commands are understood:

status
    Show current system hostname and related information.

set-hostname [NAME]
    Set the system hostname. By default this will alter the pretty, the static, and the transient hostname alike, however if one or more of --static, --transient, --pretty are used only the selected hostnames are changed. If the pretty hostname is being set, and static or transient are being set as well the specified host name will be simplified in regards to the character set used before the latter are updated. This is done by replacing spaces by "-" and removing special characters. This ensures that the pretty and the static hostname are always closely related while still following the validity rules of the specific name. This simplification of the hostname string is not done if only the transient and/or static host names are set, and the pretty host name is left untouched. Pass the empty string "" as hostname to reset the selected hostnames to their default (usually "localhost").

set-icon-name [NAME]
    Set the system icon name. The icon name is used by some graphical applications to visualize this host. The icon name should follow the Icon Naming Specification[1]. Pass an empty string to this operatoin to reset the icon name to the default value which is determined from the system form factor and possibly other parameters.

EXIT STATUS

On success 0 is returned, a non-zero failure code otherwise.

SEE ALSO

systemd(1), hostname(1), hostname(5), machine-info(5), systemctl(1), systemd-hostnamed.service(8)

NOTES

1.  Icon Naming Specification
    http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html