M3U Playlist Copy Script
A couple of months ago I picked up a Garmin Nuvi 760 on the cheap. As it turns out this great GPS unit can also play music quite well, especially for riding on the motorcycle. The only problem was there was no good way to get playlists on the device that I could find. Enter the following bash script. This script will read an m3u file, copy all associated mp3 files, and generate a new m3u file. Now all I have to do is specifiy m3u files that I exported from Mozilla Songbird and the path to the Garmin’s SD card.
#!/bin/bash
# April 4, 2009
# m3u_cp.sh
#
# Take an m3u file and copy all associated mp3 files
# to a destination directory and generate a new m3u.
#
# Used to copy m3u playlists from computer to Garmin.
if [ $# -lt 2 ]; then
echo "Usage: m3u_cp.sh some.m3u /dst"
exit 0
fi
# Read the m3u file into an array
declare -a M3U
exec 10<"$1"
let count=0
while read LINE <&10; do
M3U[$count]=$LINE
((count++))
done
exec 10>&-
# Determine the m3u's filename
if [[ $1 =~ [^/]*m3u ]]; then
m3u_path="$2/$BASH_REMATCH"
fi
# If playlist arleady exists, delete it
if [ -f "$m3u_path" ]; then
rm -f "$m3u_path"
fi
# Loop through the m3u lines
i=0
while [ $i -lt ${#M3U[@]} ]; do
# The current line is a comment, do nothing with it
if [ ${M3U[$i]:0:1} = "#" ]; then
echo ${M3U[$i]} >> "$m3u_path"
#Current line is a path to an mp3 file
else
# Get the current songs filename
if [[ ${M3U[$i]} =~ [^/]*mp3 ]]; then
song=$BASH_REMATCH
mpath=$( echo ${M3U[$i]} | tr -d '\r' )
# if the song doesn't exist, copy it to the desitnation folder
if [ -f "$2/$song" ]; then
echo File Exists -- $song
else
echo Copying -- $song
cp "$mpath" "$2/$song"
fi
# Write the song in the m3u file
echo $song >> "$m3u_path"
else
echo "The regex for finding the song's filename is fraked up."
fi
fi
let i=i+1
done
exit 0
# April 4, 2009
# m3u_cp.sh
#
# Take an m3u file and copy all associated mp3 files
# to a destination directory and generate a new m3u.
#
# Used to copy m3u playlists from computer to Garmin.
if [ $# -lt 2 ]; then
echo "Usage: m3u_cp.sh some.m3u /dst"
exit 0
fi
# Read the m3u file into an array
declare -a M3U
exec 10<"$1"
let count=0
while read LINE <&10; do
M3U[$count]=$LINE
((count++))
done
exec 10>&-
# Determine the m3u's filename
if [[ $1 =~ [^/]*m3u ]]; then
m3u_path="$2/$BASH_REMATCH"
fi
# If playlist arleady exists, delete it
if [ -f "$m3u_path" ]; then
rm -f "$m3u_path"
fi
# Loop through the m3u lines
i=0
while [ $i -lt ${#M3U[@]} ]; do
# The current line is a comment, do nothing with it
if [ ${M3U[$i]:0:1} = "#" ]; then
echo ${M3U[$i]} >> "$m3u_path"
#Current line is a path to an mp3 file
else
# Get the current songs filename
if [[ ${M3U[$i]} =~ [^/]*mp3 ]]; then
song=$BASH_REMATCH
mpath=$( echo ${M3U[$i]} | tr -d '\r' )
# if the song doesn't exist, copy it to the desitnation folder
if [ -f "$2/$song" ]; then
echo File Exists -- $song
else
echo Copying -- $song
cp "$mpath" "$2/$song"
fi
# Write the song in the m3u file
echo $song >> "$m3u_path"
else
echo "The regex for finding the song's filename is fraked up."
fi
fi
let i=i+1
done
exit 0
In the middle of writing this I really started wondering why I used bash. Perl would’ve been a lot easier.
Random thoughts, rants, and computers.
Joshua Glemza
So today I found a cool program that will work with iTunes and has a nice GUI. However, the author stripped it from his site saying that some people were having issues with it deleted their entire target volume. He was not able to reproduce the error and neither was I. I managed to find a copy of it floating around and I’m posting it here if anyone else would like to try it. SyncTunes v2.0.0v2
AT
thank you for writing this, I needed a script that did exactly this!
Dino
Thanks mate, I was just about to write my own little script to do this, but yours works perfectly!
Brownster
Thanks for posting this, just what I was looking for.
All the best, Brownster
Tomas
Thanks dude! This is just what i needed!!