DosTips.com

@echo off
setlocal enabledelayedexpansion

Set sz=
for /f "tokens=5 delims= " %%a in
('type mytext.txt') Do (Set sz=!sz!+%%a)
echo !sz!

if mytext.txt is empty , do statement does not get executed and the statement
,echo !sz!, results in ,!sz! itself. How can i check the sz to see if mytext.txt is empty or not?.

sz will be undefined if mytext.txt does not exist. Otherwise it will contain the file size.

The same thing works for batch file and function call arguments. Assume %1 contains your file name:

Try HELP FOR and HELP CALL for a full list of expansion modifiers.

Dave Benham