#! /bin/bash
# This script tests: ppmtoxpm xpmtoppm
# Also requires: pgmtopbm ppmtopgm


#ppmtoxpm -hexonly testimg.ppm | \
# xpmtoppm  | cksum
ppmtoxpm testgrid.pbm | xpmtoppm | \
  ppmtopgm | pgmtopbm -th -value=0.5 | cksum