> This is read from the kernel and comes from PROM, but a userland program does not
> have a direct access to anything like that.
well, there is hostid ...
hostid(1) User Commands hostid(1)
NAME
hostid - print the numeric identifier of the current host
SYNOPSIS
/usr/bin/hostid
AVAILABILITY
SUNWcsu
DESCRIPTION
The hostid command prints the identifier of the current host
in hexadecimal. This numeric value is likely to differ when
hostid is run on a different machine.
siva% whoami
george
siva% ls -l /usr/bin/hostid
-r-xr-xr-x 1 bin 2940 May 2 1996 /usr/bin/hostid
siva% hostid
80816e38
siva%
No particular superuser requirements here.
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