Test all modules for multiple installed versions

Test-InstalledModuleMultiples.ps1

#Copy & pasted from the work of Jack (@sharepointjack) - http://sharepointjack.com/2017/powershell-script-to-remove-duplicate-old-modules
#Will test all installed modules for multiple versions installed on the machine
$mods = Get-InstalledModule

foreach ($Mod in $mods) {
    Write-Host "Checking $($mod.name)"
    $latest = Find-Module $mod.name

    $specificmods = Get-InstalledModule $mod.name -allversions
    Write-Host "$($specificmods.count) versions of this module found [ $($mod.name) ]"  
 
    foreach ($sm in $specificmods) {
        if ($sm.version -eq $latest.version)
        { $color = "green"}
        else
        { $color = "magenta"}
        Write-Host " $($sm.name) - $($sm.version) [highest installed is $($latest.version)]" -foregroundcolor $color
	
    }
    Write-Host "------------------------"
}
Write-Host "Done"