neocon is a handy terminal application (not only) for Bootloader.
neocon has a few graving advantages over some other terminal apps:
You can download the source at http://svn.openmoko.org/developers/werner/neocon/. Build neocon by issuing
make
To connect to the [bootloader|Bootloader] use
./neocon -t 30 /dev/ttyACM0
To getrid of neocon, just issue a
killall neocon