Thanks for the replies guys, but I'm still not able to get this to work.

I moved the file to /home/user and tried the chmod command, but it returned No such file or directory. So I tried this as root, and it gave no errors - assuming this means that it worked, I tried to execute it again, but I'm back to square one - Not found.

I tried to execute in both user mode and as root but the same problem.

Is there anything else that I could try?