How to get a returned value from powershell and get it in a batch file?
If you need to use this value in your bat
environment use FOR /F
:
@echo off
for /f "delims=" %%a in ('powershell .\test.ps1') do Set "$Value=%%a"
Echo Value received from Powershell : %$Value%
powershell "&{.\test.ps1 %* ;exit $LastExitCode}" set code=%errorlevel%
I know it's a little bit late to answer this question, but I would like to give it a try just in case any one needs more detailed solution. So, here it goes.
I created a batch function that would execute ps script for you and return a value, something like this:
:: A function that would execute powershell script and return a value from it.
:: <PassPSCMD> pass the powreshell command, notice that you need to add any returning value witth Write-Host
:: <RetValue> the returned value
:RunPS <PassPSCMD> <RetValue>
for /F "usebackq tokens=1" %%i in (`Powershell %1`) do set returnValue=%%i
set "%2=%returnValue%"
Goto:eof
:: End of :RunPS function
Now, as an example to use it:
set psCmd="&{ Write-Host 'You got it';}"
call :RunPS %psCmd% RetValue
echo %RetValue%
This will display on console screen You got it
As a more complicated example, I would add:
Let's assume that we want to check if a VM is Up or Down, meaning if it's powered on or off, so we can do the following:
:CheckMachineUpOrDown <returnResult> <passedMachineName>
set userName=vCenterAdministratorAccount
set passWord=vCenterAdminPW
set vCenterName=vcenter.somedmain.whatever
set psCmd="&{Add-PSSnapin VMware.VimAutomation.Core; Connect-VIServer -server %%vCenterName%% -User %userName% -Password %passWord%; $vmServer = Get-VM %2;Write-Host ($vmServer.PowerState -eq 'PoweredOn')}"
call :RunPS %psCmd% RetValue
if "%RetValue%" EQU "True" (set "%1=Up") else (set "%1=Down")
Goto:eof
:: A function that would execute powershell script and return a value from it.
:: <PassPSCMD> pass the powreshell command, notice that you need to add any returning value witth Write-Host
:: <RetValue> the returned value
:RunPS <PassPSCMD> <RetValue>
for /F "usebackq tokens=1" %%i in (`Powershell %1`) do set returnValue=%%i
set "%2=%returnValue%"
Goto:eof
:: End of :RunPS function
Now, how to use :CheckMachineUpOrDown function?
just follow this example:
set Workstation=MyVMName
call :CheckMachineUpOrDown VMStatus %Workstation%
echo %VMStatus%
This will display Up if the VM is Powered On or Down if the machine is Off.