Bash scripts to find and fix FLAC files

Three part process to test all FLAC files on my system, attempt to fix the files and lastly, update tag information.

Part 1 - Find the bad files
<<< --- flactest.sh --->>>

#!/bin/bash
#
# Part one of the process.  Looks for flac files with errors.
#
szDate=`/bin/date`
szMusicRoot='/var/lib/mythtv/music'
#szErrFile="$szMusicRoot/flac_errors.txt"
szErrFile="/tmp/flac_errors.txt"

echo Recursively testing flacs in $szMusicRoot
echo Flac decoding errors logged to $szErrFile
echo Flac test of $szMusicRoot started at $szDate >"$szErrFile"

/usr/bin/find "$szMusicRoot/" -name '*.flac' -type f -not -exec /usr/bin/flac -t --totally-silent '{}' \; -and -print >>"$szErrFile"

echo Done!

Part 2 - 'Fix' the bad files
<<< --- flacfix.sh --- >>>

#!/bin/bash
# This script is part two of the process.  This will 'repair' all files that
# have been written to flac_errors.txt
#
# Requires the file flac_errors.txt to already exist
#
szDate=`/bin/date`
szMusicRoot='/var/lib/mythtv/music'
#filelist="$szMusicRoot/flac_errors.txt"
filelist="/tmp/flac_errors.txt"
fixedfile="/tmp/nometa.txt"

flac=/usr/bin/flac

#find "$szMusicRoot" -type f -name "*.flac" > /tmp/flacfiles.list
echo > $szDate > $fixedfile

if [ -f /tmp/since ];
then
        mv /tmp/since /tmp/since."$szDate"
fi
touch /tmp/since

#Get rid of the first line of the file
file=$(head -1 $filelist)
sed -i 1d $filelist
echo "Files to process:  " $(wc -l $filelist)

while [ -s $filelist ] ; do
        file=$(head -1 $filelist)
        echo $file >> $fixedfile
        wav_pref=${file%%flac};
        wav_suff=wav
        wav_file="$wav_pref""$wav_suff"
        if [ -f "$file" ];
                then
                $flac -F -f -s -d --delete-input-file "$file"
        fi
        if [ -f "$wav_file" ];
                then
                $flac -5 -f -s --delete-input-file "$wav_file"
        fi
# remove current file from list
        sed -i 1d $filelist
done

Part 3 - Update the vorbis tag information
<<< ---  fixmeta.sh --- >>>

#!/bin/bash
# This script will read the input file, needmeta.txt which has directories
# that have a newer timestamp than the file /tmp/since.  These directories
# need to have the metadata updated for their audio files.  The script
# fixalbums.pl is executed in each of these directories.
#
# Requirements:
# touch the /tmp/since with your necessary time/date
# the previous script touches the /tmp/since file automatically.
# touch --date "12/25/2012 15:00:00" /tmp/since
#
szDate=`/bin/date`
szMusicRoot='/var/lib/mythtv/music'
filelist=$szMusicRoot/needmeta.txt
flac=/usr/bin/flac

echo Gathering directories to process ...
find $szMusicRoot -type d -newer /tmp/since > $filelist

while read Path
do
if [ "$szMusicRoot" != "$Path" ]
then
echo $Path
        ArtistAlbum=${Path##$szMusicRoot}
        NewArtist=${ArtistAlbum%/*}
        Artist=${NewArtist#/}
        Album=${ArtistAlbum##*/}
        AA=$szMusicRoot/$ArtistAlbum
        cd "$AA" && fixalbums.pl
fidone < "$filelist"