Batch file that monitors the number of files in a directory

Sometimes the fastest and easiest way to complete a task is a good old MS-DOS batch (.bat) file.  A friend recently needed to get a quick fix in place for their production machine.

“I need to whip up a batch file that monitors the number of files in a directory.  Basically, I want to see if there are 100 files in a directory and then start and stop a service to do some quick cleanup.”

The For command can be used to loop through the files in a folder and get a count and then do something based on that number.

@ECHO OFF

SETLOCAL
SETLOCAL ENABLEDELAYEDEXPANSION

SET count=0
for %%o IN (D:\temp\*.*) DO (
      echo %%o
      SET /A count=count + 1
)

echo %count%

IF "%count%"=="100" ECHO NET STOP MyApp

ENDLOCAL ENABLEDELAYEDEXPANSION
ENDLOCAL