#! /bin/bash
# This script tests: pbmtocmuwm cmuwmtopbm
# Also requires: 

  alias cmuwmtopbm="${PBM_TESTPREFIX}cmuwmtopbm"
  alias pbmtocmuwm="${PBM_TESTPREFIX}pbmtocmuwm"
  shopt -s expand_aliases

# Should print 2425386270 41, cksum of testgrid.pbm
pbmtocmuwm testgrid.pbm | cmuwmtopbm | cksum