#!/bin/bash

 PDFDIR=pdf
 GIFDIR=gif

 for PDF in `ls $PDFDIR/*.pdf`
  do
     PDFNAME=`basename $PDF`    
     GIF=$GIFDIR/${PDFNAME%%.*}.gif

     if [ ! -f $GIF ]
      then 
           echo $PDF
           rm $PDF
     fi
 done

exit 0;