#! /bin/bash
# This script tests: pnminvert
# Also requires: 

${PBM_TESTPREFIX}pnminvert testimg.ppm | ${PBM_TESTPREFIX}pnminvert | cksum
${PBM_TESTPREFIX}pnminvert testgrid.pbm | ${PBM_TESTPREFIX}pnminvert | cksum