I posted earlier with a problem it's here, I have edited the script a little and it tells me once more that the end of line is unexpected and I'm really lost with this one, thanks for any help.

The new version:

#!/bin/sh
case $# in
0) echo "Usage: enshar filename1 filename2 [...]" >&2
;;
*) for file
do
if [ -d $file ]
then echo "enshar: $file is a directory" >&2
elif [ ! -f $file ]
then echo "enshar: $file does not exist" >&2
elif [ ! -r $file ]
then echo "enshar: $file is not readable" >&2
elif [ -h $file ]
then echo "enshar: $file cannot enshar" >&2
exit n
else
echo "\!EnShAr!\"
set '"cksum" $file'
"test $1 = nnnnnnnnnn || echo $0: bad cksum in $file << '\!EnShAr!\'"
cat $file
fi
done
;;
esac