Solved Execute BAT script containing infinite loop automatically at boot

[Joe7]

I'm really struggling to get a BAT script with an infinite loop to run in background on system startup.
Here's the script:

@ echo off 
setlocal enabledelayedexpansion
set log=c:\testscript.log
echo %date% %time%     Script started > %log%
for /l %%n in (0,0,1) do (
  echo !date! !time!    Check done... >> %log%
  timeout 10 > nul
)

I tried:
- running from command line prompt, and it works fine
- windows task scheduler
- sc tool to add it as a service

But as a service it doesn't start.
With the scheduler it starts, writes "Script Started", enters the loop one time and writes "Check done...", but then it doesn't write anything else.
Maybe the scheduler runs it and then stops it immediately?

So, how can I make this work?
Thanks in advance!

 

[Alejandro85]

Bat files aren't typically used to make infinite loops and sometimes this can be a problem if a bat file runs for too long. Probably the best solution would be to change the file to simply do one iteration and exit, and setup Task Scheduler to run it periodically forever (effectively building the infinite loop within TS). This is more similar to what both tools are meant to be used.

I have no idea really why TS fails immediately after the first iteration, you probably have to dig the logs in event viewer to find out.
A service is a special kind of executable, that calls a specific set of Windows APIs in a particular sequence to interface with the operating system, you simply can't make one in a bat file.

 

[Joe7]

I cannot reply, maybe my post contains some unwanted text, or there is some sevenforum issue.
Anyway... I pasted here my reply:

https://paste.c-net.org/RealistSauna

Thanks again!