a prompt for powershell copy this function into your $profile

prompt.ps1

function prompt {
	$prompt_str = ""
	$history = @(Get-History)
	if($history.Count -gt 0)
	{
		$lastItem = $history[$history.Count - 1]
		$lastId = $lastItem.Id
		if ($LastExitCode -ne 0 -and $LastExitCode -ne $null) {
			# we still cant trust this was acctualy the last commands error as it is only
			# reset for native executables cmdlets dont touch $LastExitCode.
			# slightly hacky but to fix we parse the last command and test if it is a native executable
			$last_cmd = [System.Management.Automation.Language.Parser]::ParseInput(
				$lastItem.CommandLine,
				[ref]$null,
				[ref]$null
			).Find({
				$args[0] -is [System.Management.Automation.Language.CommandAst]
			}, $true).GetCommandName()
			if ($last_cmd){
				$last_cmd = Get-Command $last_cmd -ErrorAction SilentlyContinue
				if ($last_cmd.CommandType -eq 'Application') {
					$prompt_str += "Exited with ($LastExitCode)`n"
				}
			}
		}
	}
	$nextCommand = $lastId + 1

	$prompt_str += "PS7$Env:username:$(Get-Location)-$($nextCommand)-$>"
	return $prompt_str
}