Question re ncurses and the various ttys

Derek Ragona derek at
Thu Oct 12 11:05:44 PDT 2006

You should be able to do this, provided the perms are set right on that device.


At 10:24 PM 10/11/2006, Murray Taylor wrote:
>Hi all
>I've been digging around in the various man pages and havent yet found
>incantations I require.
>Goal: to create a curses driven status screen that can run without user
>I want to know if it is possible to _programatically_ switch to an
>virtual tty, and then use this as the display page.
>( By unused I mean marked 'off' in /etc/ttys )
>So if I set ttyv7 to off, can I launch a program (possibly from
>a cold boot) that selects tty7 ( ie the now getty-less terminal ),
>possibly sets the rows and cols like th ecommand line vidcontrol can,
>and then continues executing a curses app ?
>I can write the curses bit.
>Can I execute vidcontrol(1) via a system(3) call and make it stick after
>call returns or does it only affect the environment within the call.
>Can I programtically do the same as Alt-F8 to preselect my screen?
>Will the curses output go onto this selected screen or would it go
>to the initial console screen? (Hmm maybe that is part of the answer,
>in the form of "Does curses output only go to the current console?"
>( ... am I even on the right track ?? )
>Murray Taylor
>Special Projects Engineer
>Bytecraft Systems
>"Any intelligent fool can make things bigger and more complex... It
>takes a
>touch of genius - and a lot of courage to move in the opposite
>--Albert Einstein
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