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datetimebatch-filelast-modified

Compare current time to file date time last modified in Windows Batch File

I would like a command in a batch file to only execute if it has not been ran for the last 15 minutes. To achieve this I can create a "last_run" file to log the time last ran.

Where I am stuck is comparing the time last modified to the current time and taking action if the time last modified.

Here is my current code:

@echo off
set filename=last_run.txt
if not exist %filename% (
   rem NOT EXISTS, CREATE FILE THEN PRINT THE LIST
   echo.>"%filename%"
   GOTO PrintList
) else (
   rem FILE EXISTS, GET TIME LAST MODIFIED
   FOR %%? IN (%filename%) DO (set filetime=%%~t?)
   echo %filetime%
   rem IF TIME LAST MODIFIED > 15 MINS PRINT THE LIST
   if timediff??(%filetime%, current) > 15 mins {
      GOTO PrintList
   } else {
      GOTO End
   }
)

:PrintList
rem PRINT THE LIST
echo now print the list
rem WRITE TO THE FILE TO UPDATE TIME LAST MODIFIED
echo.>"%filename%"
GOTO End

:End
Solution

  • Another implementation using from your :

    @Echo Off
Set "filename=last_run.txt"
Set "minutes=15"
If Not Exist "%filename%" GoTo :PrintList
"%__APPDIR__%WindowsPowerShell\v1.0\powershell.exe" -NoProfile If(((Get-Date)-(Get-Item ".\%filename%").LastWriteTime).Minutes -LT %minutes%){Exit 1}
If ErrorLevel 1 Exit /B
Rem Your payload below here.

:PrintList
CD.>"%filename%"

    If you are happy to accept that the PC running this code will always have the appropriate entries in %PATH% and %PATHEXT%, you can change "%__APPDIR__%WindowsPowerShell\v1.0\powershell.exe" to just PowerShell.