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Okay.

Thanks again.

Thank you for your time but if you would read my last post carefully and not skim over it... you'd see that I said "except for loop" which implies that I already know how to do it with a for loop...

If bourne shells doesn't have math then how am I able to execute statements like var=$(($1-1))

And is it possible to find x to the power of y using expr function (or in any possible way in bourne...

for (( i=1; i<=3; i++ )); do
for (( j=1; j<=3; j++ )); do
for (( k=1; k<=3; k++ )); do
echo $i$j$k
done
done
done
Will the above code work on a BOURNE shell?

As far as my understanding is,...

Wow! Thanks....those were amazingly fast replies!

What is the difference between the two methods? Is there a difference (in any scenario) or is it just a matter of personal choice?

I want to store the return value of

grep -c string filename

into a variable, say count. How do I do that?

For example if grep -c "string" "filename" shows 0 on executing it in the sh shell...