This article is from a FAQ concerning SCO operating systems. While some of the information may be applicable to any OS, or any Unix or Linux OS, it may be specific to SCO Xenix, Open There is lots of Linux, Mac OS X and general Unix info elsewhere on this site: Search this site is the best way to find anything.
SCO Unix (and Linux) provides up to 12 login sessions on the main console. You can switch between these logins by holding down the ALT key and then pressing a function key. Each key is related to a specific tty port: F1 is tty01, F2 is tty02 and so on.
When you are using a GUI screen, however, you need to hold CTRL and ALT, and then press a function key. So, if the automatic SCO login is on tty02 (which it is by default), you can switch to a character based login on tty01 by holding CTRL and ALT, and then pressing F1.
Amazingly enough, this behaviour can be changed using "xswkey". This program allows you to specify that a different sequence of keys will be used to switch screens. The default, however, is CTRL and ALT.
Sometimes it would be useful to have multiple consoles while in single user mode. That's possible on both SCO and Linux; see How to use multiple consoles in single user mode for details.
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