Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I've recently downloaded a game (Mark of the Ninja from Humble Bundle 9 to be exact) to play on Ubuntu. From what I can tell after extracting the game, it is stand-alone and doesn't require installation on the computer you want to play it on (I want to play it off my flash drive at university). However, as I don't have root access on the computers at university, I can't use chmod +x ninja-bin to allow executing the main file as a program instead of opening it in gedit. Also, when I try executing it via the terminal using ./ninja-bin I get bash: ./ninja-bin: Permission denied. Is there any workaround for this for which I don't need root access? Or should I just not try to play games on a computer which I don't have root for?


share|improve this question
chmod is usually not restricted to privileged users. If your university does not allow you to execute arbitrary files, you probably should not run the game. – choroba Sep 26 '13 at 9:01
So I spoke to some friends of mine, and it turned out that the issue was that the game was on my flash drive - apparently marking files as executable doesn't work so well on the FAT format. So I've copied the game to my home folder on the network here, and I can chmod +x and execute the binaries just fine. Only now I get the message ERROR: Missing required OpenGL extensions. which probably isn't something I can fix, with me not being an admin and all... Thanks so much for your help, guys! – Liam Baker Sep 26 '13 at 11:18

If you are not a member of sudo group and if your access to chmod command was blocked, then there is nothing that you can do. Due to these reasons Linux like systems are known for their security.

Or, maybe you can do something: convince the admin (root) to change the permissions for that file :).

share|improve this answer

Yes, run it with sudo:

sudo ./ninja-bin

I suppose the elevated rights are required during install procedure.

share|improve this answer
and what password should they enter? – SimplySimon Sep 26 '13 at 9:16
Enter your user password. – Frantique Sep 26 '13 at 9:50

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.