Export Usage
================

::

    [blyth@belle7 ~]$ which export.sh
    ~/env/bin/export.sh
    [blyth@belle7 ~]$ export.sh VGD
    G4DAE_EXPORT_LOG=/data1/env/local/env/geant4/geometry/export/VGD_20140218-1226/export.log
    G4DAE_EXPORT_DIR=/data1/env/local/env/geant4/geometry/export/VGD_20140218-1226
    G4DAE_EXPORT_SEQUENCE=VGD

    ========== writing nuwa.py output to /data1/env/local/env/geant4/geometry/export/VGD_20140218-1226/export.log ==================