gemtopnm

Convert a GEM image file into a PNM image. More information: https://netpbm.sourceforge.net/doc/gemtopnm.html.

Convert a GEM image file to a PNM image:

gemtopnm {{path/to/file.img}} > {{path/to/output.pnm}}

Describe the contents of the specified GEM image:

gemtopnm -d {{path/to/file.img}}

Display version:

gemtopnm -version