Update variable in a For loop

[darioit]

Hello folks,

why in a FOR loop, %time% variable doesn't update?

Code: Select all

@echo off
for /f "delims=" %%a in ('dir /b *.*') do (
   echo %time%
   )

Result:
9:44:07.81
9:44:07.81
9:44:07.81
9:44:07.81
9:44:07.81
9:44:07.81
9:44:07.81

Thank you

[ShadowThief]

You need delayed expansion.

Code: Select all

@echo off
setlocal enabledelayedexpansion
for /f "delims=" %%a in ('dir /b *.*') do (
   echo !time!
)

Variables in batch that use the %var% naming convention are replaced with their actual values when the script is run. Any variable that is inside of parentheses (for loops, if blocks, multiline output redirection, etc.) will not update while the script is running unless you include the line setlocal enabledelayedexpansion in your script and use the !var! convention for those variables.

[darioit]

Good now works, many Thanks

10:09:28.74
10:09:29.75
10:09:30.79
10:09:31.83
10:09:32.86
10:09:33.90
10:09:34.94
10:09:35.99

[Squashman]

As Jeb told you last year in this thread of yours.
viewtopic.php?f=3&t=5844