PAM Error in Terminal
When I open Terminal, all I get is a window with the following text:
login: PAM Error: Module is unknown
\[Process exited - exit code 1\]
I cannot type anything in this window, and any new windows opened display exactly the same message. I have seen a few suggested answers on the web but they all relied on being able to enter commands into a Terminal window, so of course these were of no help at all.
I have used Disk Utility to verify the disk and repair permissions and also started up in single-user mode to run fsck, etc. (as displayed on the screen when you start up in single-user mode). No luck there either.
I would greatly appreciate it if someone knows how to fix this problem, with hopefully an explanation of what might have caused it (so that I can take steps to prevent it happening again, if it is something that I did unknowingly).
Quadra 700 - sys 7.0.1•, PowerMac G4 DP 1.25 GHz - sys 10.4.11