HOSTNAME(5) hostname HOSTNAME(5)
NAME
hostname - Local hostname configuration file
SYNOPSIS
/etc/hostname
DESCRIPTION
The /etc/hostname file configures the name of the local system that is
set during boot using the sethostname(2) system call. It should contain
a single newline-terminated hostname string. Comments (lines starting
with a `#') are ignored. The hostname may be a free-form string up to
64 characters in length; however, it is recommended that it consists
only of 7-bit ASCII lower-case characters and no spaces or dots, and
limits itself to the format allowed for DNS domain name labels, even
though this is not a strict requirement.
You may use hostnamectl(1) to change the value of this file during
runtime from the command line. Use systemd-firstboot(1) to initialize
it on mounted (but not booted) system images.
HISTORY
The simple configuration file format of /etc/hostname originates from
Debian GNU/Linux.
SEE ALSO
systemd(1), sethostname(2), hostname(1), hostname(7), machine-id(5),
machine-info(5), hostnamectl(1), systemd-hostnamed.service(8), systemd-
firstboot(1)
systemd 245 HOSTNAME(5)