The following optional environment variables can be used to control
module search behavior:

       HOME   The user's home directory  (e.g., /home/andy)

       YUMAPRO_HOME
              The root of the user's YumaPro work directory 

              (e.g., /home/andy/swdev/netconf)

       YUMAPRO_INSTALL
              The root of the directory that netconfd-pro is installed on this
              system (default is, /usr/share/yumapro)

       YUMAPRO_DATAPATH
              Colon-separated list of directories to search for data files
              (e.g.:  './workdir/data-files:/home/andy/data').

              The datapath parameter will override this environment variable,

              if both are present.

       YUMAPRO_MODPATH
              Colon-separated list of directories to search for modules and
              submodules.  (e.g.: './workdir/modules:/home/andy/test-modules')
              The modpath parameter will override this environment variable,
              if both are present.