MTKBabel is a Perl program to operate and extract data from devices using the MediaTek MTK chipset, for example, and originally Holux devices.
sudo apt-get install mtkbabel
dmesg
[14782.035926] cdc_acm 5-2:1.1: ttyACM0: USB ACM device
/dev/ttyACM0
.sudo mtkbabel -p /dev/ttyACM0 -l off -c -f gpslog
sudo mtkbabel -p /dev/ttyACM0 -E
To access the device without using sudo, the best way seems to be to write a udev rule. Search for udev gpsbabel ubuntu usb
or similar, and you shall find.
See the manual page for more info: man mtkbabel
.