List, Stop and Start IIS sites using powershell (Wrapper for appcmd)

IIS.ps1

function Get-IISSites() {
    Set-Alias -Name "appcmd" -Value "$env:SystemRoot\System32\inetsrv\appcmd.exe"
    $output = appcmd list site
    if($LASTEXITCODE -ne 0) {
        throw "You need to be Admin!"
    }


    $matches = $output | Select-String -pattern "(?<=SITE `").*?(?=`")" -AllMatches
    return $matches | ForEach-Object { $_.Matches.Value }
}

function Stop-IISSite {
    Param([string] $Name)

    Set-Alias -Name "appcmd" -Value "$env:SystemRoot\System32\inetsrv\appcmd.exe"

    appcmd stop site /site.name:$Name

    if($LASTEXITCODE -ne 0) {
        throw "Unable to stop site (Are you admin?)"
    }
}

function Start-IISSite {
    Param([string] $Name)

    Set-Alias -Name "appcmd" -Value "$env:SystemRoot\System32\inetsrv\appcmd.exe"

    appcmd start site /site.name:$Name

    if($LASTEXITCODE -ne 0) {
        throw "Unable to stop site (Are you admin?)"
    }
}