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forktest(6)		      Svgalib User Manual		   forktest(6)

NAME
       forktest - tests the vga_safety_fork() function.

SYNOPSIS
       forktest

DESCRIPTION
       This  is	 a  copy of the keytest(6) demo (look there). However, it uses
       vga_safety_fork(3) to start a background process to restore the console
       in  case	 the  fore  ground  process  crashes. It removes all automatic
       restore functions of svgalib. Thus, in case you kill this program  with
       kill(1)	or <Ctrl>-C, only the background process will save your system
       from being hosed up.

       You can set a videomode to use  by  setting  the	 environment  variable
       SVGALIB_DEFAULT_MODE  to	 a number (see vgatest for a list) or a string
       like G0x1x2 where you replace 0 with desired x resolution, 1  with  the
       desired	y  rez,	 and  2 with the desired number of colors (2, 16, 256,
       32K, 64K, 16M, 16M4). Again, only certain choices  are  available,  see
       vgatest for a list.

       In case nothing is selected, G320x200x256 is choosen.

       This  demo  is part of svgalib and can be found in the demos/ subdirec‐
       tory of the original svgalib distribution. However, it is not installed
       in  the	system by default, s.t. it is unclear where you can find it if
       your svgalib was installed by some linux distribution. Even then,  when
       you  have  the demo on your system, you probably won't have the sources
       s.t. it is only of limited use for you.

       In case of any such problem, simply get an  svgalib  distribution  from
       the  net.  You  even  don't need to install it. Just make in the demos/
       subdirecty. As of this writing,	svgalib-1.2.12.tar.gz  is  the	latest
       version	 and   can   be	 retrieved  by	ftp  from  sunsite.unc.edu  at
       /pub/Linux/libs/graphics and tsx-11.mit.edu at  /pub/linux/sources/libs
       which will most probably be mirrored by a site close to you.

SEE ALSO
       svgalib(7),  vgagl(7), libvga.config(5), vga_safety_fork(3), threed(6),
       accel(6), bg_test(6), eventtest(6), fun(6),  keytest(6),	 mousetest(6),
       scrolltest(6), speedtest(6), spin(6), testaccel(6), testgl(6), testlin‐
       ear(6), vgatest(6), plane(6), wrapdemo(6)

AUTHOR
       This manual page was edited  by	Michael	 Weller	 <eowmob@exp-math.uni-
       essen.de>.  The	exact  source of the referenced demo as well as of the
       original documentation is unknown.

       It is very likely that both are at least to some extent are due to Harm
       Hanemaayer <H.Hanemaayer@inter.nl.net>.

       Occasionally  this  might be wrong. I hereby asked to be excused by the
       original author and will happily accept any additions or corrections to
       this first version of the svgalib manual.

Svgalib 1.3.0			 8 April 1998			   forktest(6)
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