zebraprint.sh

#!/bin/sh
filename=$1
echo "Begin processing file:" $filename

dimensions=$(identify -format '%w %h' $filename)

IFS=' ' read -a array <<< "$dimensions"
width=${array[0]}
height=${array[1]}

echo "Width is " $width
echo "Height is " $height


if [ "$width" -gt "$height" ]
  then
		echo "Printing landscape!"
		convert $filename -density 203 -rotate 270 /tmp/printjob.ps
		rm $filename
	else
		echo "Printing Portrait"
		convert $filename -density 203 /tmp/printjob.ps
		rm $filename
fi

lp -o ppi=203 -o natural-scaling=100 /tmp/printjob.ps