Test all modules versions against PSGallery

Test-InstalledModules.ps1

#Inspired from the work of Jack (@sharepointjack) - http://sharepointjack.com/2017/powershell-script-to-remove-duplicate-old-modules
#Will test all installed modules against the PSGallery and see if a never version is available
$mods = Get-InstalledModule

foreach ($mod in $mods) {
    Write-Host "Checking $($mod.name)"
    $latestAvailable = Find-Module $mod.Name -ErrorAction SilentlyContinue

    if($null -eq $latestAvailable) { continue }

    if ($mod.version -eq $latestAvailable.version) {
        $color = "green"
        $text = "Latest available version match current installed"
    }
    else {
        $color = "magenta"
        $text = "Latest available version is higher than the current installed"
    }
     
    Write-Host "$($mod.Name) - $($mod.version) [$text $($latestAvailable.version)]" -foregroundcolor $color
    Write-Host "------------------------"
}

Write-Host "Done"