HOSTNAMECTL(1)                   hostnamectl                  HOSTNAMECTL(1)

NAME         top

       hostnamectl - Control the system hostname

SYNOPSIS         top

       hostnamectl [OPTIONS...] {COMMAND}

DESCRIPTION         top

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

       This tool distinguishes three different hostnames: 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 is a default received from network
       configuration. If a static hostname is set, and is valid (something
       other than localhost), then the transient hostname is not used.

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

       Use systemd-firstboot(1) to initialize the system host name for
       mounted (but not booted) system images.

OPTIONS         top

       The following options are understood:

           Do not query the user for authentication for privileged

       --static, --transient, --pretty
           If status is used (or no explicit command is given) and one of
           those fields is given, hostnamectl will print out just this
           selected hostname.

           If used with set-hostname, only the selected hostname(s) will be
           updated. When more than one of those options is used, all the
           specified hostnames will be updated.

       -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 container name, separated by ":",
           which connects directly to a specific container on the specified
           host. This will use SSH to talk to the remote machine manager
           instance. Container names may be enumerated with machinectl -H

       -h, --help
           Print a short help text and exit.

           Print a short version string and exit.

       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
           hostname will be simplified in regards to the character set used
           before the latter are updated. This is done by replacing spaces
           with "-" 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 the hostname
           to reset the selected hostnames to their default (usually

       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

       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.

EXIT STATUS         top

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

SEE ALSO         top

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

NOTES         top

        1. Icon Naming Specification

COLOPHON         top

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systemd 215                                                   HOSTNAMECTL(1)