# You do not have to do this if you're already in the dialout group
$ sudo usermod -a -G dialout $(whoami)
# Log out and log back in
$ sudo nano /etc/udev/rules.d/99-dreamcheeky-rocket.rules
# Add the following lines:
SUBSYSTEM=="usb", ATTRS{idVendor}=="2123", ATTRS{idProduct}=="1010", MODE="0666", GROUP="dialout"
SUBSYSTEM=="usb", ATTRS{idVendor}=="0a81", ATTRS{idProduct}=="0701", MODE="0666", GROUP="dialout"
# And then run
$ sudo service udev restart