hostid(1)hostid(1)Namehostid - set or print identifier of current host system
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 Alsogethostid(2), sethostid(2)hostid(1)