HOSTNAME(1) — UNIX Programmer’s Manual
NAME
hostname − set or print name of current host system
SYNOPSIS
hostname [ nameofhost ]
DESCRIPTION
The hostname command prints the name of the current host, as given before the “login” prompt. The super-user can set the hostname by giving an argument; this is usually done in the startup script /etc/rc.local.
SEE ALSO
gethostname(2), sethostname(2)
4.2 Berkeley Distribution — April 29, 1985