NAME
hostname - set or print name of current host system

SYNOPSIS
hostname [-s] [nameofhost]

DESCRIPTION
Hostname prints the name of the current host. The super-user can
set the hostname by supplying an argument; this is usually done in
the network initialization script /etc/rc, normally run at boot
time. The -s option trims any domain information from the printed
name.

SEE ALSO
gethostname(2), sethostname(2)