[ILUG] ILUG The Screen Buffer

[Padraig Brady]

Kieran OSullivan wrote:
>>In the buffer memory of your video card, usually.  You can view
>>the stored text using shift-pgup and shift-pgdn.  Note that switching
>>to different virtual consoles (using Alt-F1, Alt-F2 etc) usually
>>clears this buffer.
>>
>>              Colm
>>
> Sorry I should have been a bit clearer in my original post I know about the Page Up (or Pig Up for all the Simpsons fans) sutff I was wondering how could I access the text using say the grep command.
> 

You could I suppose do something like:
open(/dev/vcs0);
write("loads of CTRL+PGUP");
while (scrolled) {
	read(); /* This DOES read the current (scrolled) screen */
         grep(); /* or whatever you want to do */
	write("CTRL+PGDN");
}

Details might be a bit more difficult (you may need to compare
screen buffers to see if the CTRL+PG{UP,DOWN} are doing something).

Padraig.