Solving Permission denied problem

Question

When I try to install GIST program these words appear:

Permission denied

So what does this mean and what can I do to solve this problem?

marwa@marwa-Vostro-1540:~$ cd Desktop/GIST_1.0/
marwa@marwa-Vostro-1540:~/Desktop/GIST_1.0$ ./GIST
bash: ./GIST: Permission denied

Answer 1

Permission denied when trying to run a file in the current directory usually means you don't have the execute permission for the file. Possibly, it's missing the executable bit, which you can add with the chmod command.

chmod +x ./GIST