Unix file systems (UFS, SVFS, EFS....)?

[brownrigg at kuhub.cc.ukans.edu]

A/UX supports two file systems:  UFS (BSD4.2, the "preferred" file
system), and SVFS (system 5, for compatability).  THis point was
poignantly driven home while trying to discover a bug in "kermit"
with wildcard "sends".

Lo and behold, Kermit on our SGI PErsonal IRIS displays the same problem,
and it seems to have yet another file system, refered to as "EFS" 
(extent file system).

What is the origin of this file system?  What is the "predominant"
file system on the plethora of Unix boxes out there (i.e, is there an
emerging concensus about which way to go)?

ANy gurus out there willing to enlighten the stupid?

Rick Brownrigg