Shell Programming and Scripting

Script 1
//Shell script that accepts arguments and prints them in reverse order//
echo "number of arguments"
len=$#;
while [ $len -ne 0 ]
do
   eval echo \$$len
   len=`expr $len - 1`
done

$sh test.sh a b
b
a

//Bundle shell script that accepts file name as arguments and create a shell scipr that has the file \
as well as the code to recreate the files.Thus if the script generated by your script is executed \
it would recreate the original file//

echo "#to bundle ,sh this file"
for i in $*
do
   echo "echo $i 1>&2"
   echo "cat > $i <<'end of $i'"
   cat $i
   echo " end of $i"
done


---------------
Output
$cat f1
hi
$cat f2
hello
$sh test.sh f1 f2 >new.sh
$rm f1 f2
$sh new.sh
f1
f2

"new.sh: line 1: to: command not found".

eval echo \$$len