cleansdr.sh

#!/bin/bash

clean_sdr_in_current_folder () {
    find . -maxdepth 1 ! -path . -type d -print0 | while read -d $'\0' FOLDER
    do
        FOLDER=$(basename "$FOLDER")
        if [[ $FOLDER == *".sdr" ]]; then
            if [ -d "$FOLDER" -a ! -n "$(find . -maxdepth 1 -type f -name "${FOLDER%.sdr}*" -print -quit)" ]
            then
                echo "Remove $FOLDER"
                rm -rf "$FOLDER"
            fi
        else
            pushd "$FOLDER"
            clean_sdr_in_current_folder
            popd
        fi
    done
}

pushd documents
clean_sdr_in_current_folder