There is a problem running lokixml.sh in the 16.6 drivers on Ubuntu 13.10 64 bit.
./lokixml.sh: 143: ./lokixml.sh: [[: not found
The solution is in the comments of How to install AMD graphics drivers on Ubuntu - YouTube by Scott Walter:
First, extract the .run file:
Next, cd into the newly created directory
# optionally, run this to preview the line which is causing the error:
grep -n "\[\[" lokixml.sh
Now, open lokixml.sh in your preferred editor and search for "[[" (without quotes). Given that we're working with exactly the same version, you should find this on line 143. Comment out the entire conditional block (lines 143-145).
Finally, run the install script with sudo:
sudo ./ati-installer.sh 14.20 --install