Script to convert WAV file from my db9pro audio recorder & move them to Say&Go folder so IFTTT create a Todoist tasks with them

convert.sh

# ensure the path is right
cd /Volumes/RECORD/RECORD

# delete bad files
find . -name "*.WAV" -type 'f' -size -1kb -delete

# batch process the recording
for f in *.WAV;
    do

    # remove last second (turning off noise)
    length=`ffprobe -v 0 -show_entries format=duration -of compact=p=0:nk=1 "$f"`
    length=`bc <<< "$length-0.4"`

    # encode in mp3
    ffmpeg -i "$f" -ss 0 -t "$length" -acodec libmp3lame -y "${f/%WAV/mp3}";
done

# if successful, delete the WAV files & move the MP3 to the Dropbox folder
if [ $? -eq 0 ]; then
    rm *.WAV
    mv *.mp3 ~/Dropbox/Apps/Say\&Go/
    kill -9 $PPID
fi