I asked a coworker to find the method/command to run updates on Server Core and he came back with a link to this nice little script:
http://msdn.microsoft.com/en-us/library/aa387102(VS.85).aspx
And every time I forget the command to do something in Server Core, when I do a search to find it, I always come back with a link to this post:
And just because I am lazy, and don’t particularly like the command line (even though I like Server Core), I have created a folder with a few batch files that I use when I am setting up a Server Core machine. For instance, I have a batch file that has the product key in it already and I run it to install the product key and activate.