HOSTID(1) Domain/OS SysV HOSTID(1)
NAME
hostid - set or print identifier of current host system
SYNOPSIS
hostid [ identifier ]
DESCRIPTION
The hostid command prints the identifier of the current host in
hexadecimal. This numeric value is expected to be unique across all
hosts and is commonly set to the host's Internet address. The super-user
can set the host ID by giving a hexadecimal argument or the hostname;
this is usually done in the start-up script /etc/rc.local.