Batch TASKLIST to variables

Question

I would like to find if an application is open and get it's PID. For this, I used,

wmic process where name="notepad.exe" get ProcessId

If there are two, notepad.exes open, it shows 2 PID's. I want to taskkill one if 2 are open. How would I approach doing this. How can I check if there are 2 of the same named processes(with specific names) open at a time? Is there a way I can store the tasklist in a list?

Answer 1

I think this is what you want:

@ECHO OFF
SETLOCAL EnableDelayedExpansion
SET /A I=0
SET PIDS=
FOR /F "tokens=*" %%G IN ('wmic process where name^="notepad.exe" get ProcessId ^| FINDSTR /v ProcessId ^| FINDSTR /r /v "^$"') DO (
    SET /A I=I+1
    SET PIDS=!PIDS!%%G,
    SET PIDS=!PIDS: =!
)
SET PIDS=!PIDS:~1,-1!
ECHO Found %I% processes
ECHO PIDs: %PIDS%

It will output the process count and the PIDs as a comma-separated list. Here's the output if i run it against chrome.exe:

C:\tmp>q46277950.bat
Found 12 processes
PIDs: 1696,5668,11644,4240,1624,4284,15076,15236,2816,11388,5652,5840