hostname - set or print the name of the current host sys- tem
hostname [name] hostname {--help,--version}
This manual page documents the GNU version of hostname. With no arguments, hostname prints the name of the current host system. With one argument, it sets the current host name to the specified string. Usually, only a privileged user may set the host name. OPTIONS --help Print a usage message on standard output and exit successfully. --version Print version information on standard output then exit successfully.