Script Shell to change name of all my files but with specifics rules

Question

I have a car and my audio post only read music with a specific order.

I have a big list of music, and I want to change every justanexemple.mp3 on 001|justanexemple.mp3 and the next one "i love stackoverflow.mp3" on "002|i love stackoverflow"

Also, we get one limit is when I'm on the 009|music.mp3, and I want the next one like this 010|music.mp3

I also get a problem is I have some music with space like this "I like turtles.mp3" so the command mv doesn’t function...

So I coded something like this

    #!/bin/sh                                                                                   

counter=001

for file in `ls -1 *.mp3 | sort -t. -k 2n` 
do   
newname=$counter'|'.$file   
if [ $file != $newname ]
   then mv $file $newname   
fi   
counter=`expr $counter + 1`   
counter="00${counter}" 
echo $counter done

but is not working great...

my music list is something like that :

> Kario & Yaret - Somos Lokos (Prod. By Las Ovejas Negras & Gaby.mp3
> Dj_Foxx-T_-_An_Sé_an_Nonm_(feat._Pompis)_-_.mp3
> Harry_Toddler_-_Draw_Mi_Table_wegotitfirst_com.mp3 Kario & Yaret Ft.mp3
> Mc Cassidy Ft. Polakan Y Delirious - Bad Boy.mp3

...

Answer 1

1. Don't parse ls
2. Don't use string concatenation to format numbers. Use printf
3. Quote your variables

Your script can be written as:

c=0
for i in *.mp3; do
  c=$((c+1))
  pref=$(printf "%03d" $c)
  echo "$i" "${pref}|$i"
done

If the output seems good, replace echo with mv to perform the actual rename.