Create bash script based on other project.
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rename_music_files.sh
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rename_music_files.sh
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#!/bin/bash
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# 2024-06-07 C.Greenwood
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# Rename all files in a music library based on metadata.
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# Uses the format "[Track] [Title].mp3"
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# TBD Remove all the stuff from AddTrackToTitle.
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# 2022-08-30 Hyperling
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# Put the files' Track in their Title so that Toyota Entune plays the songs in the right frikken order!!!
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# At least with the 2019 RAV4, it acknowledges the Track#, but still sorts albums alphabetically for whatever reason.
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#
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# Return Codes:
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# 0) Success!
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# 1) Parameter passed
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# 2) Pre-requisite tool not installed
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# 3) Failure to find music metadata
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# 4) Failure to create fixed file
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# 5) Fixed file is missing
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# 6) Unknown operator
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#
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## Variables ##
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PROG="`basename $0`"
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DIR="`dirname $0`"
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EXT=".mp3"
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ADD="(Fixed)"
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TIME="`which time`"
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TRUE="T"
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FALSE="F"
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UNDO="$FALSE"
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## Functions ##
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function usage {
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cat <<- EOF
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Usage:
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$PROG [-h] [-u]
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Parameters:
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-h : Help, display the usage and exit succesfully.
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-u : Undo, attempt to un-fix files which have had the normal script run against them.
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Place this file at the root of your music destined for a flash drive and run it without any parameters.
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It will dive through all folders and convert your MP3's to have the Track# in the Title.
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The process changes the filenames to contain (Fixed) so you know it's touched the file.
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Please be sure you only run this on a copy of your music, not the main source!
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This tool has a few pre-requisites you should make sure you have installed:
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- exiftool
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- ffmpeg
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Thanks for using $PROG!
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EOF
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exit $1
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}
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function error {
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num_chars=$(( 7 + ${#1} ))
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echo ""
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printf '*%.0s' $(seq 1 $num_chars)
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echo -e "\nERROR: $1"
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printf '*%.0s' $(seq 1 $num_chars)
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echo -e "\n"
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usage $2
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}
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## Validations ##
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# Check for parameters.
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while getopts ":hu" opt; do
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case "$opt" in
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h) usage 0
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;;
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u) UNDO="$TRUE"
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;;
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*) error "Operator $OPTARG not recognized." 6
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;;
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esac
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done
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# Ensure critical tools are available.
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if [[ ! `which exiftool` ]]; then
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error "exiftool not found" 2
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fi
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if [[ ! `which ffmpeg` ]]; then
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error "exiftool not found" 2
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fi
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if [[ ! `which bc` ]]; then
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error "bc not found" 2
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fi
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if [[ ! `ls /usr/bin/time` ]]; then
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error "/usr/bin/time not found" 2
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fi
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# Make sure the user understands they're going to change their music's title.
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typeset -l change
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read -p "Please acknowledge you are OK with irreversibly modifying your music's metadata. [y/N] " change
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if [[ $change != "y" ]]; then
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echo -e "\nThank you for your honesty. Come back when you feel more confident. :)\n"
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usage 0
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fi
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# Make sure the user has a backup of the music different than the folder they're running this in.
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typeset -l backup
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read -p 'Please ensure you have a backup. There is no warranty for this program! [y/N] ' backup
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if [[ $backup != "y" ]]; then
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echo -e "\nThank you for your honesty. Please backup your music and come back soon. :)\n"
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usage 0
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fi
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printf 'User has provided permission to alter data.\nMoving forward in 5... '
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sleep 1
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printf '4... '
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sleep 1
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printf '3... '
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sleep 1
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printf '2... '
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sleep 1
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printf '1... \n'
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sleep 1
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## Main ##
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# Loop through all files in and lower than the current directory.
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count=0
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total="`find $DIR -name "*${EXT}" -printf . | wc -c`"
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avg_time=0
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total_time=0
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time_count=0
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est_guess=0
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time find $DIR -name "*${EXT}" | while read file; do
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count=$(( count + 1 ))
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echo -e "\n$file"
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# Skip file if it's already correct.
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if [[ "$UNDO" == "$FALSE" && "$file" == *"$ADD"* ]]; then
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echo "Already fixed, skipping."
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continue
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elif [[ "$UNDO" == "$TRUE" && "$file" != *"$ADD"* ]]; then
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echo "Already unfixed, skipping."
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continue
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fi
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# Retrieve and clean the Track#
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track=""
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# Get raw value
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track="`exiftool -Track "$file"`"
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# Filter the header
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track="${track//Track /}"
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track="${track// : /}"
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# Remove disk designations
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track="${track%%/*}"
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# Remove any whitespace before/after
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track="`echo $track`"
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# Add a leading 0 to single digits.
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[[ ${#track} == 1 ]] && track="0$track"
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echo "Track=$track"
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# Retrieve and clean the Title
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title=""
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title="`exiftool -Title "$file"`"
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title="${title//Title /}"
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title="${title// : /}"
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title="`echo $title`"
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echo "Title=$title"
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# Skip file if title is already changed.
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if [[ "$UNDO" == "$FALSE" && "$title" == "$track"* ]]; then
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echo "Title already contains Track, skipping."
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continue
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elif [[ "$UNDO" == "$TRUE" && "$title" != "$track"* ]]; then
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echo "Title already missing Track, skipping."
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continue
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fi
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# Create the new file with the correct Title
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new_title=""
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new_file=""
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if [[ "$UNDO" == "$FALSE" ]]; then
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new_title="${track}. ${title}"
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new_file="${file//$EXT/$ADD$EXT}"
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else
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new_title="${title/${track}. }"
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new_file="${file//$ADD/}"
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fi
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if [[ ! -z "$track" && ! -z "$title" ]]; then
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echo "Creating '`basename "$new_file"`' with Title '$new_title'."
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AV_LOG_FORCE_NOCOLOR=1
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/usr/bin/time -f '%e' -o time.txt ffmpeg -nostdin -hide_banner -loglevel quiet -i "$file" -metadata "Title=$new_title" "$new_file"
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time=`cat time.txt`
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#rm time.txt
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ffstatus="$?"
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if [[ $ffstatus ]]; then
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echo "Success! Completed in $time seconds."
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time_count=$(( time_count + 1 ))
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total_time=$(echo "$total_time + $time" | bc -l)
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avg_time=$(echo "$total_time / $time_count" | bc -l)
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else
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error "Did something bad happen? ffmpeg returned $ffstatus." 4
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fi
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elif [[ -z "$track" && ! -z "$title" ]]; then
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echo "No Track# found, leaving Title alone."
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continue
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else
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error "File does not have Track or Title metadata. Are you sure you're running this on music?" 3
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fi
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# Confirm the new file exists and remove the old file if so
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if [[ -e "$new_file" ]]; then
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echo "Removing file..."
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rm -v "$file"
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else
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error "$new_file was not created successfully." 5
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fi
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# Give an estimate for time remaining. The magic number is to account for non-ffmpeg time.
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magic="1.2"
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est_guess_total="$( echo "est=(($total - $count) * $avg_time) * $magic; scale=0; est/1" | bc )"
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est_guess_secs="$( echo "est=$est_guess_total % 60; scale=0; est/1" | bc )"
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est_guess_mins="$( echo "est=($est_guess_total/60) % 60; scale=0; est/1" | bc )"
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est_guess_hours="$( echo "est=($est_guess_total/(60*60)); scale=0; est/1" | bc )"
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est_guess="$est_guess_hours hour(s) $est_guess_mins minute(s) $est_guess_secs second(s)"
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echo -e "\nFinished $count of $total. Estimated time remaining is $est_guess."
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done
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echo -e "\nProcess has completed. Enjoy having your songs in album-order!"
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exit 0
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