PowerShell: Set-ExitCodeAndExit (ReturnCode)

powershell_exitcode.ps1

# Sends exit code to calling shell
$host.SetShouldExit([System.Environment]::ExitCode)

Set-ExitCodeAndExit.ps1

function Set-ExitCodeAndExit { 
	[CmdletBinding(SupportsShouldProcess=$True,DefaultParameterSetName="None")]
	PARAM(
        [Parameter(Mandatory = $true, Position = 0, ValueFromPipeline = $true, ParameterSetName="p1")]
        [int]
		$ExitCode
	)
	Write-Verbose "Setting ExitCode to $($ExitCode) and exiting..."
	# When a PowerShell script is called from a batch file or Command Prompt, this line allows a return code back to the calling shell
    $host.SetShouldExit($ExitCode)
    exit $ExitCode
}

$host.SetShouldExit() saved my life on an ancient Win7 PS2.0 machine. A simple Exit 1 would always set the return code of powershell.exe -file to zero ....