gplink is a gp32 linking tool for linux.  It should also be possible to
compile it for any platform supported by libusb, though some endian stuff
probably needs fixing for non x86 architectures.

Requirements: Set up usbdevfs: http://www.linux-usb.org/USB-guide/x173.html
When you plug in and switch on your gp32 you should see an extra entry appear
under /proc/bus/usb/<bus number>/

Permissions: For gplink to be able to access the usb bus you need to either:
a) set permissions on usbdevfs to 0666 using an fstab entry like: none
/proc/bus/usb usbdevfs devmode=0666 0 0 b) use gplink as root, or c) use
something like linux hotplug (http://linux-hotplug.sourceforge.net) to manage
the permissions.

A statically linked binary for linux is included in the archive.  To build
gplink requires libusb (http://libusb.sourceforge.net).

Usage:
gplink info                            get smc info
gplink ls [directory name]             smc directory listing
gplink get source [destination dir]    download file
gplink put file [file...] destination  upload file to given destination
gplink mkdir path                      create directory
gplink rmdir path                      delete directory
gplink rm file                         delete file
gplink end                             end gp32 link mode
options:
-x end link mode after operation
-c do 8.3 filename conversion

Paths can be specified in either /gpmm/blah.fxe or gp:\gpmm\blah.fxe format,
but remember to escape backslashes if you use them.

Bugs: 
Uploading of files bigger than 4mb or so seems to fail.

Error recovery isn't too good yet.  If an operation doesn't work you
might have to switch your gp32 off and on for the link command to start
working again.

Author:
Mike Dawson
mike@dexy.mine.nu
http://dexy.mine.nu/gp32