Update specific packages based on wildcard (or regex pattern) using PowerShell outside the Visual Studio Package Manager Console. Caveat: I'm not a PowerShell expert and I'm pretty sure there must be terser ways to accomplish the same, but the command-line argument requirements of nuget.exe required this to be more complex than I'd have liked. :)

Invoke-PackageUpdate

gci -r -inc packages.config |
    %{
        ([xml](get-content $_)).packages.package.id | 
        Add-Member -NotePropertyName 'PackageConfigFile' -NotePropertyValue $_ -PassThru 
    } |
    ?{ $_ -like 'MyCompany.*' } |
    %{ nuget.exe update $_.PackageConfigFile -Id $_ -RepositoryPath (join-path (split-path (Split-Path $_.PackageConfigFile)) 'packages') }

If you have the possibility, you could try Paket instead. It comes with this any many other great features not seen in nuget.exe