error Suse

#! /bin/bash

echo "enter number of directories"
read dir
n=1

while [ $n -le $dir ]
do
echo $n
cd $n

cat "01 Track 1.mp3"  "02 Track 2.mp3" "03 Track 3.mp3" "04 Track 4.mp3" "05 Track 5.mp3" "06 Track 6.mp3" "07 Track 7.mp3" "08 Track 8.mp3" "09 Track 9.mp3" "10 Track 10.mp3" "11 Track 11.mp3" "12 Track 12.mp3" "13 Track 13.mp3" > cd$n.mp3

cp cd$n.mp3 ../

cd ..

pwd
let n=n+1
done

n=1
while [ $n -le $dir ]
do
cat cd$n.mp3 >> finalFile.mp3
let n=n+1
done
pwd
#rm cd*.mp3