I want to do vertical datum conversions on geotiffs using [NOAA vdatum][1]
The conversion status menu shows no progress and no conversion happens.
I see that [Microsoft Windows needs GDAL environmental variables set][2].
The Windows paths are...


C:\Program Files\GDAL 

C:\Program Files\GDAL\bin 

C:\Program Files\GDAL\bin\gdal\apps


C:\Program Files\GDAL\bin\gdal-data 

C:\Program Files\GDAL\bin\gdal\plugins


 
I am running Linux Ubuntu 16.04 with GDAL installed.  Do I need to set the environmental variables for Linux?  If so, I understand how to set paths (sudo -H gedit /etc/environment).

What would the paths be for Linux?


  [1]: https://vdatum.noaa.gov/welcome.html
  [2]: https://vdatum.noaa.gov/docs/userguide.html