recover audacity 2.0 crash data

audacity_rescue2.sh

#!/bin/bash
#Recover from an Audacity 2.0 crash by reassembling the saved data files
#Based on https://gist.github.com/912222

if [ $# != 2 ]; then
    echo "ERROR: Not enough arguments"
    echo "$0 [SOURCE PATH] [DESTINATION]"
    exit 1
fi

DATA="$1/"
OUT=$2

if [ -e $OUT ]; then
    # Hope the path exists
    echo "ERROR: Output file exists ($OUT)"
    exit 1
fi

COUNT=1

find $DATA -type f -name "*au" | sort > /tmp/audacity_rescue.txt

while IFS= read -r FILE; do
    if [ -e $FILE ]; then
        #The offsets are probably all going to be the same, but best check it
        OFFSET=$(echo $(od -i -j4 -N4 -An < $FILE) ) # Use echo for easy trim
        if [ $COUNT -eq 1 ]; then
            # Write the header
            dd ibs=$OFFSET count=1 if=$FILE of=$OUT
        fi
         echo "Adding $FILE (offset=$OFFSET)"
         dd ibs=$OFFSET skip=1 conv=notrunc oflag=append if=$FILE of=$OUT
    else
        break
    fi
    let COUNT+=1
done < "/tmp/audacity_rescue.txt"