./googledirections "boston, ma" "new york, ny" | ../src/viking -
Or edit gcget with your geocaching.com username and password and try this:
-./gcget 94704 50 2>/dev/null | ../src/viking -
+./gcget 34.25,-118.25 50 2>/dev/null | ../src/viking -
+(new python script no longer works with zip code, but this should be trivial to add.)