ultrix man page for hostid

hostid(1)						      General Commands Manual							 hostid(1)

Name
       hostid - set or print identifier of current host system

Syntax
       hostid [identifier]

Description
       The  command prints the identifier of the current host in hexadecimal.  This numeric value is expected to be unique across all hosts and is
       normally set to the host's Internet address.  The super-user can set the hostid by giving a hexadecimal argument.  This is usually done	in
       the startup script

See Also
       gethostid(2), sethostid(2)

																	 hostid(1)