Can anyone tell me how to test functionality of zzInterix utility?
What it is actually???????
zzinterix (probably C:\SFU\usr\sbin\zzInterix on your Windows box) is part of Interix/SFU, Microsofts UNIX "emulation" layer - the MS equivalent of the MKS Toolkit or Cygwin. It's not really anything to do with Unix/Linux at all but part of the Windows subsystem that allows it to emulate parts of *nix based OS's (which is all again something that sits on top of Windows "basic" POSIX subsystem support).
I used to use Interix on my Windows XP box, but have removed it in favour of Cygwin.
Cheers
ZB