Skip to main content

How to Kill a Slow Process using DOS Batch File Script with TaskKill and TaskList

If you are still trapped in the era of batch files and command lines in Windows environment, here is something you can add to your DOS cheat codes.  Lucky for us here, we are still using DOS batch file to implement installation of some updates to our system. Here is a simple batch file script that is designed for slow systems that requires a significant amount of time to kill a particular process. The requirement is simple,  do not start any copying or moving of files until  the process ( i.e. MyProcess.exe) is totally killed by DOS. The simplest solution would be to use TASKKILL to kill the process, wait for a few seconds  then start copying/ moving of files there after. Unfortunately, while we were testing this simple step on a slow machine, DOS would take an awful lot of minutes to kill the process in question. Thus, when our delay is reached, we would encounter error on copying/moving files that is currently used by the unkilled process causing a failure on the installation. So instead of increasing our delay to God-Knows-How-Much , we went for another approach. That is to continuously try to kill the process ( after a certain  delay ) until it is actually out of the task list. This would mean  a:) continuously monitoring the task list to see if the process is still alive b:) create a loop that will do the monitoring of the task list, try to kill the process, delay for some time and repeat again. 

Here is a simple script that my friend came out to solve the issue. She used TASKKILL to kill the process, TASKLIST to list the currently running process, a temporary file to dump the task list result, PING command to add delay and some FOR and IF statements. This worked on XP machines and also tested on Win2003 machines.

    TASKKILL /F /T /IM MyProcess.exe
    echo delaying for 35sec...
    ping -n 1 -w 35000
    TASKLIST /FI "IMAGENAME eq MyProcess.exe" /NH > tmp.txt
      FOR /F %%A IN (tmp.txt) DO (
      IF /I "%%~A"=="MyProcess.exe" (
          GOTO Loop
    del /F /Q tmp.txt

REM Continue the installation process here, after MyProcess.exe has been killed.


Instead of 'ping -n 1 -w 35000' one could use the timeout utility (e.g. timeout /T 35).

The creation of temp file is not really needed. If Command extensions are enabled (SETLOCAL ENABLEEXTENSIONS) FOR can execute a utility and then parse its output
FOR /F ["options"] %variable IN ('command') DO command [command-parameters]

See "FOR /?" for more details...

Popular posts from this blog

Hiding Unwanted Python Folders and Files in Visual Studio Code

Visual Studio Code is a universal editor and pretty good at it. However, the explorer view maybe cluttered with the automatically generated folders and files confusing developers. Python is no different. Below are example files and folders generated by Python.

The __pycache__ folder and *.pyc files  are totally unnecessary to the developer. To hide these files from the explorer view, we need to edit the settings.json for VSCode. Add the folder and the files as shown below:
Copy and paste the lines below :


renaming default namespaces for VSTO projects in VS2008

So here is the scenario , you are starting a VSTO project and decided that your default namespace is ExcelAddInTesterApp . You created the project and started coding the project. After several days , your boss called and said "hey marvin , make use of this namespace OurCompany.ExcelAddInTesterApp , we have to add our company name to it got it?" . You get back to your machine thinking its just a simple property just like any project you've been working on. So you right clicked the VSTO project and hit properties . Boom! What the F@#$? The default namespace textbox is disabled!!!!

I've been through this and I googled for ways to do it and ended up with a blog from a Microsoft MVP telling me it can't be done because it is disabled. Then I thought of Refactoring, the beauty and grandeur of the renaming process. I selected the namespace and hit the refactor menu hoping that this would solve the problem . Unfortunately , it did not rather it displayed the message box …

Automatic Properties and Object Initializers in .Net 3.5

With the release of .Net 3.5 alongside with Visual Studio 2008 , new enhancements was again introduced . Some maybe well pronounced such as the inclusion of WCF, WPF , LINQ in .Net 3.0 and some just came unnoticed. If you have been accustomed of using a particular method or technique in implementing a certain code in .Net 2.0 , because of backward compatibility , you may not even notice that there are new ways of implementing it in .Net 3.5.

Here are two new concepts in .Net 3.5 that a developer may not notice ( at least in my opinion ) : Automatic Properties and Object Initializers . To illustrate these two , I am going to present the pre-.Net 3.5 way (.Net 2.0) and the .Net 3.5 way in creating a simple class with simple properties.

Automatic Properties

Creating a class can be tedious , especially when working with a list of properties , . One way to get around having to type the code for a private field and its public property getter and setter is to use a refactoring tool. However, …