We are all familiar with the traditional way of finding the running tasks and killing them using Task Manager. While this method is simple, it is not as fun and geeky as using command prompt(come on! accept it). Moreover, killing a task using the command prompt provides us with much more control and ability to end multiple tasks at once.
All of this is done using the command TaskKill. First of all, let’s cover the basics.
You can kill a process in your computer using the `process ID (PID) or by image name (EXE filename).
To do this, First open the Command Prompt with adminstrative power. Now to have an idea about the processes that are running in your computer, run the tasklist command and see all of the running processes:
C:\>tasklist Image Name PID Session Name Mem Usage ========================= ======== ================ ============ firefox.exe 26356 Console 139,352 K regedit.exe 24244 Console 9,768 K cmd.exe 18664 Console 2,380 K conhost.exe 2528 Console 7,852 K notepad.exe 17364 Console 7,892 K notepad.exe 24696 Console 22,028 K notepad.exe 25304 Console 5,852 K explorer.exe 2864 Console 72,232 K
In the example above you can see the image name and the PID for each process. If you want to kill the explorer process run:
C:\>Taskkill /IM explorer.exe /F
C:\>Taskkill /PID 2864 /F
The /f flag is kills the process forcefully. Failure to use the /F flag will result in nothing happening in some cases. One example is whenever I want to kill the explorer.exe process I have to use the /F flag or else the process just does not terminate.
If you have multiple instances of an image open such as multiple firefox.exe processes, running the taskkill /IM firefox.exe command will kill all instances. When you specify the PID only the specific instane of firefox will be terminated.
The real power of taskkill are the filtering options that allow you to use the following variables and operators.
- eq (equals)
- ne (not equal)
- gt (greater than)
- lt (less than)
- ge (greater than or equal)
- le (less than or equal)
“*” is the wildcard.
You can use the variables and operators with the /FI filtering flag. For example, let’s say you want to end all processes that have a window title that starts with “Internet”:
C:\>taskkill /FI "WINDOWTITLE eq Internet*" /F
How about killing all processes running under the Steve account:
C:\>taskkill /FI "USERNAME eq Steve" /F
It is also possible to kill a process running on a remote computer with taskkill. Just run the following to kill notepad.exe on a remote computer called SteveDesktop:
C:\>taskkill /S SteveDesktop /U RemoteAccountName /P RemoteAccountPassword /IM notepad.exe /F
To learn more about taskkill run it with the /? command just like any other Windows command.
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