Using this program you can convert anything you can see on a Sun screen into a pbm bitmap. Just display whatever you're interested in, do a screendump, run it through rasfilter8to1 if you're on a color Sun, run it through rasttopbm, and then use pnmcut to select the part you want.
The rasttoppm filter provides the same functionality as rasttopbm in addition to handling color images; but rasttopbm is worth keeping, since it is significantly faster.
Copyright (C) 1988 by Jef Poskanzer.
Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. This software is provided "as is" without express or implied warranty.