Something

#!/bin/sh[ -z "$1" ] && { echo "usage: `basename $0` file..."; exit 1; }OUT="Result.pdf"TMP="anytopdf$$.ppm"rm -f "$OUT"for F in "$@"; do [ -f "$F" ] || continue NF=${F%.*}.pdf echo `basename "$F"` "-->" `basename "$NF"` convert "$F" "$NF"donegs -q -dBATCH -dNOPAUSE -dSAFER -sDEVICE=pdfwrite -sOutputFile="$OUT" *.pdfrm -rf $TMPls -lh "$OUT"