HOSTID(1) General Commands Manual 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 hostid by giving a hexadecimal argument or the hostname;
this is usually done in the startup script /etc/rc.local.
SEE ALSO
gethostid(2), sethostid(2)
4.2 Berkeley Distribution May 5, 1986 HOSTID(1)