This is a version of g7to (Garmin GPS transfer program) from 
http://home.attbi.com/~g7towin/
modified to run under Linux and possibly other unix like operating systems.
Contact David Gesswein djg@pdp8.net if you find problems.

The default serial port is /dev/ttyS0.  Use the -5 option to set the port
g7to -5 /dev/ttyS1
The manual has not been updated for the unix port so documents the behavior
under DOS.

The g7datums.txt file will be searched for in the directory the g7to 
executable is run from.  If the file is not found then the internal table
in g7to which should be identical to g7datums.txt will be used.

The X key does not exit from continuous position reports or other
spots it does under DOS, use control C to stop the program.