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 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 fallback value 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
   and length used, while the static and transient hostnames are limited
   to the usually accepted characters of Internet domain names, and 64
   characters at maximum (the latter being a Linux limitation).

   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

   The following options are understood:

   --no-ask-password
       Do not query the user for authentication for privileged operations.

   --static, --transient, --pretty
       If status is invoked (or no explicit command is given) and one of
       these switches is specified, 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 these switches are specified, 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 HOST.

   -M, --machine=
       Execute operation on a local container. Specify a container name to
       connect to.

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

   --version
       Print a short version string and exit.

   The following commands are understood:

   status
       Show current system hostname and related information.

   set-hostname NAME
       Set the system hostname to NAME. 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 removing special
       characters and spaces. 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 "localhost").

   set-icon-name NAME
       Set the system icon name to 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 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 to 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", "watch",
       "embedded", as well as the special chassis types "vm" and
       "container" for virtualized systems that lack an immediate physical
       chassis.

       Pass an empty string to reset the chassis type to the default value
       which is determined from the firmware and possibly other
       parameters.

   set-deployment ENVIRONMENT
       Set the deployment environment description.  ENVIRONMENT must be a
       single word without any control characters. One of the following is
       suggested: "development", "integration", "staging", "production".

       Pass an empty string to reset to the default empty value.

   set-location LOCATION
       Set the location string for the system, if it is known.  LOCATION
       should be a human-friendly, free-form string describing the
       physical location of the system, if it is known and applicable.
       This may be as generic as "Berlin, Germany" or as specific as "Left
       Rack, 2nd Shelf".

       Pass an empty string to reset to the default empty value.

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), systemd-firstboot(1)

NOTES

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

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