Katawa Shoujo Forums

I've tried launching it from the .sh file in terminal, but all I get is this error:

File "/home/kinch/Desktop/Katawa_Shoujo-linux-x86/Katawa_Shoujo.sh", line 4
if [ "x`uname -s`" = "xDarwin" ]; then
^
SyntaxError: invalid syntax

It looks like a dev error in the code itself, but I'm ...