batch convert word documents to PDF

#!/bin/bash
# usage convert_to_pdf.sh [directory] [delete after conversion(y/n)] [run recursivly (y/n)]

OLDIFS="$IFS"
IFS=""

cd $1

lowriter --convert-to pdf *.doc
lowriter --convert-to pdf *.docx
lowriter --convert-to pdf *.rtf

if [ "$2" = "y" ]; then
    rm *.doc
    rm *.docx
    rm *.rtf
fi

if [ "$3" = "y" ]; then
    find $1 -type d -exec bash -c "cd '{}' && /home/main/Scripts/convert_to_pdf.sh '{}' $2 n" \;
fi

IFS=$OLDIFS