I was trying to set up permissions on a VPS used for game servers so each user could only access their respective folders from sftp, so after setting up everything i did "chmod -R o-r /" from the root directory. Now everyone appears to be locked out of the system other than my current root sessions. I tried to revert back to normal by doing "chmod -R o+r /" but it didn't appear to work. Am I screwed or can fix this without reinstalling? I am running centOS 6 (x64).