#! /bin/bash
# This script tests: pgmtosbig sbigtopgm
# Also requires: pamchannel

  alias sbigtopgm="${PBM_TESTPREFIX}sbigtopgm"
  alias pgmtosbig="${PBM_TESTPREFIX}pgmtosbig"
  shopt -s expand_aliases

# Should produce 1571496937 33838, cksum of testimg.red

pamchannel -infile=testimg.ppm -tupletype="GRAYSCALE" 0 | pamtopnm | \
  pgmtosbig | sbigtopgm | cksum