Can anybody explain why this doesn't work? It's simple, just counts the lines in a file. Stupid program just writes 0 in the loop and in the end the correct number. set /a line=0 for /f %%i in (userstmp.txt) do ( set /a line += 1 echo %%i %line% ) echo %line% Thanks, Dejan

I'm guessing because all variables in Batch are strings (reason number 1) and Batch has absolutely no Math operations available to it (reason number 2). Unless you want some highly convoluted program to achieve that, I'd suggest just writing it in QuickBASIC or something similar.

It's been done before though. In pure batch. Try this site: http://www.accesscomm.ca/users/gbraun/batch/

First, Math operations _can_ be done in batch, although it is exceedingly difficult to understand. Second, That is a NT batch so the OP is in the wrong place.

Hi! Under NT, W2K or XP this Batchfile should work. But your line set /a line += 1 should go like this: set /a line="line+1" And please be aware, that it DOESNT work under a DOS System! GREETS Marcus