start batch and hold script until it finishes

Posted on 2008-06-20
Last Modified: 2011-10-19
i'm searching for a way to start a .bat file from a vbs script (which is started by a batch), let the vbs script monitor the batch file and continu only after the batch file has ended. the thing is that this batch file also starts a vbs... ;-)

schematic: bat1 starts vbs1, vbs1 starts bat2 which starts vbs2, vbs1 continues after bat2 (vbs2) has finished.

i tried many things already, amongst others:
For Each Process in GetObject( "winmgmts:").InstancesOf( "win32_process" )
but since the parent (vbs) as well as the child (bat) run in a cmd this is not enough...

active = WshShell.AppActivate(strTitle)
but this only works when starting ie. calc.exe directly. when i put the calc.exe in a batch-vbs file with a title (start /wait cmd /C "TITLE CalculatorVBS && cscript calc.vbs") it doesn't work no more.

(see the attached zip for examples, remove the txt extensions)

Question by:lynx7
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LVL 67

Expert Comment

ID: 21831474
How about
Dim objShell : Set objShell=CreateObject("Wscript.Shell")
objShell.Run "c:\folder\yourfile.bat",0,1

WshShell object.

String value indicating the command line you want to run. You must include any parameters you want to pass to the executable file.

Optional. Integer value indicating the appearance of the program's window. Note that not all programs make use of this information.

Optional. Boolean value indicating whether the script should wait for the program to finish executing before continuing to the next statement in your script. If set to true, script execution halts until the program finishes, and Run returns any error code returned by the program. If set to false (the default), the Run method returns immediately after starting the program, automatically returning 0 (not to be interpreted as an error code).
LVL 15

Expert Comment

ID: 21838593
Thanks SirBounty, I never knew about the WaitOnReturn option of objShell.Run.  I always used objShell.Exec() instead because it waited automatically.  It also captured the output which I may or may not need to do something with.
LVL 65

Assisted Solution

RobSampson earned 200 total points
ID: 21842289
Hi, I believe you're going to need a combination of the steps you've tried, plus the WaitOnReturn flag of the Run method.

REM ===============
wscript VBS1.vbs
REM ===============

VBS1 (started by BATCH1):
strBatchFile = "BATCH2.bat"
Set objShell = CreateObject("WScript.Shell")
objShell.Run strBatchFile, 1, True
MsgBox "Finished"

REM ===============
echo This is Test1.bat
start /wait wscript Test2.vbs
REM ===============

MsgBox "This is VBS2." & vbCrLf & "BATCH2 will wait for this to finish, because of the START /WAIT." & vbCrLf & "VBS1 will wait for BATCH2 to finish because of the True WaitOnReturn flag."



Author Comment

ID: 21855067
hey Sirbounty and RobSampson,

thanks for your tips... for now it works for step 1 of my problem which i described above... (see the dir easy in the attached zip)

now the real situation is that batch2.bat is actually an exe file (made with autoIT), which is the batch2.bat file encrypted to run with admin rights.
as soon as i run this exe file the calling vbs1.vbs.doesn't wait anymore for the ending of the exe.
i tried "objShell.Run strExeFile, 1, True" and "'objShell.exec strExeFile" (as i read somewhere that this method automatically waits for the process to end...) but neither one works.
to test this, these files are located in the test dir in the attached zip.

hope you'll have a solution for this as well...

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LVL 65

Expert Comment

ID: 21863025
Hi, when I ran your Batch2.exe it just exited straight away, so I wasn't sure what it was doing.

So, I took your VBS2.vbs file, and used PrimalScript professional to compile it to an EXE.  Then, when I renamed that to Batch2.exe and ran your "test" files, that behaved exactly the same way as the VBS version, and VBS1 waited for that EXE to finish.

So it must be that your exe actually launches another process.  While your EXE is running, does it run an executable with a specific name?  Perhaps you could set VBS up with this process monitor, just after you use the objShell.Run command.


strComputer = "."

Set objWMIService = GetObject("winmgmts:" & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2") 

boolStillRunning = True

Do While boolStillRunning = True

	Set colProcess = objWMIService.ExecQuery ("Select Name from Win32_Process WHERE Name='batch2.exe'")

	boolStillRunning = False

	For Each objProcess in colProcess

		boolStillRunning = True


	Wscript.Sleep 100


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Accepted Solution

lynx7 earned 0 total points
ID: 21863453

when running the batch2.exe you have to make sure that the vbs2-exe.vbs file is in the same dir...
(since the exe is the compiled batch2.bat file which runs the vbs2.vbs)
(check out the _test.au3 file: RunAs($sUserName, $sDomain, $sPassword, 3, $sBatchFile) )

so i assume i'll have to monitor the running of the batch2.bat instead of the batch2.exe...

i do this (run bat which runs vbs) because when you directly start the vbs you get the wscript.echo as msgboxes instead of cmd line echo's...

hope this gives you a clearer view on the process..

in the meantime i'll try your monitor code.


Author Comment

ID: 21864296
hey Robsampson,

while pasting the line "RunAs($sUserName, $sDomain, $sPassword, 3, $sBatchFile) " it suddenly struck me, why does this exe terminates so fast? because it does what it does (runas) and finishes of course ;-)...
so i found the runaswait method (haha!) and hoppa... the thing finally works, everything waits for everything as its supposed! i transposed it to my final printer driver installer/remover script and it just works fine!

super thanks for your time and useful input!
it made my day already!

LVL 15

Expert Comment

ID: 21878871

You can just give the whole thing to RobSampson.  There is no reason to split up the points between his two posts.

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