By default on RHEL 5.5 I have
[deuberger@saleen trunk]$ sudo cat /etc/securetty console vc/1 vc/2 vc/3 vc/4 vc/5 vc/6 vc/7 vc/8 vc/9 vc/10 vc/11 tty1 tty2 tty3 tty4 tty5 tty6 tty7 tty8 tty9 tty10 tty11
What is the difference between each of the entry types (console, vc/, and tty). Specifically, what is the end result of adding and removing each entry type?
My understanding is that they affect how and when you can login, but are there any other effects? And when can you and when can you not login depending on which entries are there?
EDIT 1 What I do know is that tty 1-6 correspond to whether you can login from the first 6 consoles that you reach using CTRL-ALT-F1 through CTRL-ALT-F6. I always thought those were virtual consoles, so I'm a bit confused. And what does console correspond too? Thanks.
EDIT 2 What is the effect if any in single user mode?