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I'm an IT student just starting to learn Linux/Unix and working with RedHat. Today I was doing the textbook exercises for permissions when the terminal quit accepting commands. I tried to revert back to the original permissions but nothing would work. I rebooted hoping that would help, but now when I try to login to that account the login fails and I'm returned to the login banner. I have tried to access through root, but whenever I try to run any kind of command I get a message that Access is denied. Please help, I have 2 chapters I need to have finished by Monday, and if I can't get this account working again, I will have to redo all of my work since January.
I don't believe I mistyped anything, I was changing permissions on a file and I entered chmod 200 inform (the file name) followed by chmod 300 inform, and chmod 400 when it stopped taking commands. I don't even know of any way to get this to come up in order to find a mistake, as I am unable to get into that account.
Last edited by jdebrincat; 04-02-2011 at 08:20 PM.
It sounds, to me, similar to what happens when the root file system drive has an error and the is remounted as "read only." Can you examine the log files (usually in /var/log/messages) to see if there is a clue there?
I note the you are using a terminal to access a (presumably) shared system. If this is the case, can you ask he system administrator to check for system problems? (I also note that a few of the above posts assume that you are using a personal Linux/GNU system, not a shared school system. If that's the case, booting from a live image CD/DVD, mounting the problem file system, and examining the logs might be helpful.)