debian man page for hostname

HOSTNAME(5)							   /etc/hostname						       HOSTNAME(5)

NAME
       hostname - Local host name configuration file

SYNOPSIS
       /etc/hostname

DESCRIPTION
       The /etc/hostname file configures the name of the local system that is set during boot, with the sethostname(2) system call. It should
       contain a single newline-terminated host name string. The host name may be a free-form string up to 64 characters in length, however it is
       recommended that it consists only of 7bit 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 host name as well, however only as
       fallback.

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)

AUTHOR
       Lennart Poettering <lennart@poettering.net>
	   Developer

systemd 							    10/07/2013							       HOSTNAME(5)