1 #!/bin/bash

     2 

     3 set -x

     4 

     5 for file in S-*.jpg

     6 do

     7 	fb=`basename $file .jpg`

     8 	fbb=`basename $fb -small`

     9 	if [ "$fb" == "$fbb" ] 

    10 	then

    11 		if [ ! -f "$fb-small.jpg" ]

    12 		then

    13 		# there's no -small variant

    14 		convert -geometry 300x400 $fb.jpg $fb-small.jpg

    15 		fi

    16 	fi

    17 done