Set variable in batch file for loop. Dec 11, 2012 · To access a changed variable such as the time variable, you must use !! or set with !! (have enableddelayexpansion enabled). set /a mdiff=nme-1. Dec 31, 2013 · But you can set a variable without delayed expansion. See this little demonstration (I used a simple if construct instead of for, but the effect is the same (not with if or for, but with blocks (inside ( and )). The code in the for loop is point out the various ways to set a variable. set C=%%c. When looping in for loop each iteration is accessed as the %%A variable. call echo #:C %%C%%>>%%a. SetLocal EnableDelayedExpansion. if /i %%c gtr 10 set C=1. Once you understand how the FOR loop is interpreted, you'll know how to circumvent its limitations. Dec 11, 2012 · To access a changed variable such as the time variable, you must use !! or set with !! (have enableddelayexpansion enabled). within the loop. The following example demonstrates the problem with immediate variable expansion: set VAR=before. set VAR=after. @echo off. set "var=ONE". Basically, the for loop gets parsed once. So I want to move all the files for package 001 into directory "001" and all for 002 into directory "002". I am writing a windows vista batch command to take all of the files and move them into their own directories, where each directory represents a different package. FOR variables are case sensitive, environment variables are not. REM SETTING a variable inside a block. txt. echo #:B %%b>>%%a. set n=11. set /a nme=3. e. Each iteration of the loop, the statements get executes. . Sep 19, 2016 · On this page I'll try to explain how a FOR loop is interpreted, why it seems unable to SET variables, and how to SET variables in FOR loops anyway. if "%VAR%" == "before" (. set m=12. echo #:A %%a>>%%a. Delayed environment variable expansion is useful for getting around the limitations of the current expansion which happens when a line of text is read, not when it is executed. ) Note that it is critical that the case of the FOR variable is different than the environment variable. By enabling this option, the variables can change on execution, without reparsing, i. yrujhv ijty zttuc wsnlxj ovkyy nuuyzsz nczs skohkvi ucogk lej