Hi all i have this assignment to do but i get this error message when i execute my program:

line 6: syntax error near unexpected token `do

And here's my code:

#!/bin/sh
while [ -n $1 ]
do
list= ls $1
for i in $list
do
cat $i >> basename $i
rm $i
done
shift 1
done

I know it's a stupid mistake but i can't figure it out.

Thanks