How to mass folder named according to some expression

Question

I want to create many folders whose names are like folder_x where x is an even number less than 256. Is there a unix command/dos command or some shellscript that I can run to do this? Or may be some free utility program that does mass folder creation?

I want to do this on Windows.

Answer 1

In bash and other compatible shells:

for i in $(seq 0 2 255) ; do mkdir "folder_$i" ; done

Answer 2

A simple bash script will do that.

for i in {0..256..2}
  do
    mkdir folder_$i
  done

Answer 3

In a Windows cmd prompt, this would be:

for /L %i in (0,2,255) do mkdir folder_%i

If you want to add this to a .bat file, remember it will need double %:

for /L %%i in (0,2,255) do mkdir folder_%%i