SET variables in batch file using FOR command

Question

I have a .bat file with the following commands.

My aim is concatenate the CLASSPATH variable value with the values of %%1.

The three first commands (outside of FOR command) concatenate the CLASSPATH correctly, but the FOR command only do it with the last value of the iteration.

Please help

    SET CLASSPATH=%CLASSPATH%;test1.jar
    SET CLASSPATH=%CLASSPATH%;test2.jar
    SET CLASSPATH=%CLASSPATH%;test3.jar

    FOR %%1 IN ("%CXFHOME%\lib\*.jar") DO SET CLASSPATH=%CLASSPATH%;%%1

`... do set %%1`? syntax is: `set var=value` – Stephan May 27 '15 at 17:12 — Stephan, May 27 '15 at 17:12

score 4 · Answer 1 · edited May 23 '17 at 12:30

4

You need delayed expansion:

setlocal enabledelayedexpansion
FOR %%1 IN ("%CXFHOME%\lib\*.jar") DO SET CLASSPATH=!CLASSPATH!;%%1
echo %classpath:~1%

See here for explanation and demonstration of delayed expansion.

edited May 23 '17 at 12:30

Community

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answered May 27 '15 at 17:25

Stephan

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score 1 · Answer 2 · answered May 27 '15 at 20:19

1

use setlocal enabledelayedexpansion in your script , the reason why concatenation is happening for last value of for loop is , for loop is taken as single instruction at run time so , all the values are replaced and the last values is only reflected.

answered May 27 '15 at 20:19

prudviraj

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SET variables in batch file using FOR command

2 Answers2