Batch: %time% won't update in loop

iteye_3854

于 2012-02-22 11:57:38 发布

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分类专栏： Windows Bat

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讨论了批处理文件中使用循环时，时间变量未正确更新的问题，并提供了修复方法。

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I got a problem with a batch-file.
Here it comes:

echo %time%
pause
for /L %%N IN (0, 1, 3) DO (
echo %time%
pause
)
echo 3. %time%

The first time in the loop is correct, but in the folowing all the times printed in the loop are the same, regardless how long you wait pressing the key. The last time is correct again. Somehow the %time% variable is not updated within the loop.

Try what I have put below. What exactly do you want it to output?

@echo off
SetLocal EnableDelayedExpansion
echo !time!
pause
for /L %%N IN (0, 1, 3) DO (
echo !time!
pause
)
echo 3. !time!
EndLocal