How do I reset ownership on /usr/bin/sudo on centOS? I accidentlly changed ownership of `/usr/bin/sudo` to my current user (i also did this for some other stuff in my `/usr` directory). I can't change any of them back because I need ownership of `/usr/bin/sudo` to be root to do so. I do not have root access because I'm on an Amazon EC2 instance running linux. Here's what I did (foolishly I know): sudo chown -R currentuser.currentuser /usr/ I've also hosed a ton of other stuff in the process, but I think it can all be solved if I can reset ownership of `/usr/bin/sudo` Please help. I'm brand new to Linux admin and am doing everything from the command line. EDIT: I used -R in my sudo chown command. EDIT2: I have most of my data on a separate, mounted EBS, but I'm awful with server admin and it'll probably take me an entire day to setup a new instance.

There was no solution that allowed me to fix this problem from within that system with that user. I could not get root access, and there was no trick to get around the problem.

I had to ditch the server and start anew.