Thanks thats working for me...

But my concerns was not about to put list number in front of ls but my concern is how to print a count that for which instance a loop is going to execute:

suppose i have file "yogi.txt"

and i write down a code as

for n in yogi.txt
do
echo "$n"
done

Output is:
yogi
is
not a
good
progrmmer

but what should i do if i want my output to be as follow:

1.) yogi
2.) is
3.) not a
4.) good
5.) programmer