Provided by: systemd-services_204-5ubuntu20_amd64 bug


       hostnamectl - Control the system hostname


       hostnamectl [OPTIONS...] {COMMAND}


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

       This tool distinguishes three different host names: the high-level "pretty" hostname which
       might include 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, chassis type and icon name are stored in /etc/machine-info, see machine-


       The following options are understood:

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

           Prints a short version string and exits.

           Don't query the user for authentication for privileged operations.

       -H, --host
           Execute the 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:

           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 operation to reset the icon name to the default value
           which is determined from chassis type (see below) and possibly other parameters.

       set-chassis [TYPE]
           Set the chassis type. The chassis type is used by some graphical applications to
           visualize the host or alter user interaction. Currently, the following chassis types
           are defined: desktop, laptop, server, tablet, handset, as well as the special chassis
           types vm and container for virtualized systems that lack an immediate physical
           chassis. Pass an empty string to this operation to reset the chassis type to the
           default value which is determined from the firmware and possibly other parameters.


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


       systemd(1), hostname(1), hostname(5), machine-info(5), systemctl(1), systemd-


        1. Icon Naming Specification