determine PID of process started from .bat file

by: manav08Posted on 2009-09-09 at 08:34:40ID: 25292368

Unfortunately what you are trying to achieve is possible but only by using PSTOOLs.
Just bare in mind that everytime a NOTEPAD is launched the processid will be different. I am not sure what you are trying to achieve but the process-id will vary everytime the notepad applications is launched.
2 Tools to find out Process List and then kill them are -
http://technet.microsoft.com/en-us/sysinternals/bb896682.aspx
http://technet.microsoft.com/en-us/sysinternals/bb896683.aspx

by: manav08Posted on 2009-09-09 at 08:39:26ID: 25292412

The other option is to use TASK KILL utility which comes with Windows Resurce Kit tool -
Download Link - http://www.dynawell.com/download/reskit/microsoft/win2000/kill.zip

by: QlemoPosted on 2009-09-09 at 09:18:25ID: 25292820

To make sure you get really your process, you need to use some tricks. psexec from www.sysinternals.com is needed, and then (showed with cmd, but it does not matter which command you use):

@echo off
2>&1 psexec -d cmd /c exit | find "process ID" >pid.txt
set /P ID=<pid.txt
set ID=%ID:*ID =%
set ID=%ID:~0,-1%
REM now %ID% contains your process ID

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by: dlb6597Posted on 2009-09-09 at 09:32:45ID: 25292958

This would work ASSuming no other processes named notepad were started or ended between the time you "start notepad" and when you wanted it killed...

It sums the PID value for all existing notepad processes before the Start Notepad then sums it again after...the difference is the PID of the notepad that was started in this batch...

set sonpb=
set sonpa=
set donp=
for /f "usebackq tokens=2" %%i in (`tasklist ^|find /i "notepad"`) do set /a sonpb = sonpb + %%i
start notepad
for /f "usebackq tokens=2" %%i in (`tasklist ^|find /i "notepad"`) do set /a sonpa = sonpa + %%i
set /a donp= %sonpa% - %sonpb%
pause
taskkill /PID %donp% /F

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by: xuserx2000Posted on 2009-09-09 at 09:43:18ID: 25293052

You could also use a vbscript, to launch the process, then kill it.

Example attached... Launches a command window... waits 4 seconds, then kills it.


strComputer = "." 
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\CIMV2") 
' Obtain the definition of the class.
Set objShare = objWMIService.Get("Win32_Process")
 
' Obtain an InParameters object specific
' to the method.
Set objInParam = objShare.Methods_("Create"). _
    inParameters.SpawnInstance_()
 
 
' Add the input parameters.
objInParam.Properties_.Item("CommandLine") =  "cmd"
 
' Execute the method and obtain the return status.
' The OutParameters object in objOutParams
' is created by the provider.
 
Set objOutParams = objWMIService.ExecMethod("Win32_Process", "Create", objInParam)
 
' List OutParams
Wscript.Echo "Out Parameters: "
oProcessId = objOutParams.ProcessId
 
' Allow sleep time for process to complete
 
Wscript.Sleep(4000)
 
'Kill the process
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\CIMV2") 
' Obtain an instance of the the class 
' using a key property value.
Set objShare = objWMIService.Get("Win32_Process.Handle='" & oProcessId & "'" & "")
 
' Obtain an InParameters object specific
' to the method.
Set objInParam = objShare.Methods_("Terminate"). _
    inParameters.SpawnInstance_()
'...........
 
Set objOutParams = objWMIService.ExecMethod("Win32_Process.Handle='" & oProcessId & "'" & "", "Terminate", objInParam)
 
' List OutParams
Wscript.Echo "Out Parameters: "
Wscript.echo "ReturnValue: " & objOutParams.ReturnValue

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by: nummagumma2Posted on 2009-09-09 at 10:15:08ID: 25293434

manav - I am using pstools to start with, so not a problem.

Qlemo - your code looks promising and i'm playing with it since it's the first in the list (and shortest). In playing I couldn't get it to work as written - but did remember that natively psexec returns the PID as the 'errorlevel'

Now I'm just trying to get the real app to run, since it's not notepad, but instead IE calling a specific URL.

by: dlb6597Posted on 2009-09-09 at 10:17:57ID: 25293466

you can simply change the notepad string to iexplore in my example...

by: nummagumma2Posted on 2009-09-09 at 10:28:29ID: 25293572

This works exactly:

@echo off
psexec -s -d "c:\program files\Internet Explorer\iexplore.exe" http://www.mysite.dom
set pid=%errorlevel%
sleep 10
pskill %pid%

by: QlemoPosted on 2009-09-09 at 14:03:06ID: 25295528

There is something I did not know about PSTools? Didn't think there should come anything anymore ;-). For the files:

psexec -d (detach) does not put the return value (which cannot be defined at that stage) of the process, but its process ID into %errorlevel%.

That way it is much simpler, indeed. The only thing I would add is redirecting stdout to nul.

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determine PID of process started from .bat file

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