[Proj] Local cartesian to UTM using PROJ.4

[Frode Tennebø]

I'm trying to perform a transformation of a position in a local carteisan 
system, grid north in meters (XYZ) relative to a UTM/WGS84 (ENA) center with 
the result in UTM/WGS84.  I have tried Geotrans (Local cartesian -> UTM, WGE/
WGS84), but have discovered some discrepancies.  I would like to use PROJ.4 to 
verify one or the other.  How can this be done in PROJ.4?

Regards,
 -Frode