hostname(5) - phpMan

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. 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.
       Depending on the operating system, other configuration files might be
       checked for configuration of the hostname as well, however only as
       fallback.
       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 219                                                        HOSTNAME(5)