Turn on versioning on a site's Document Libraries.

We had a lot of sites that needed to have versioning turned on, here's a simple console app I wrote to do this, you just pass the url of the web as an argument:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Microsoft.SharePoint;

namespace Mirant.Utilities.SiteVersioningActivator

{

    class Program

    {

        static void Main(string[] args)

        {

            if (args.Length != 1)

                throw new Exception("URL of the site is required as a parameter");

            string webUrl = args[0];

            using (SPSite site = new SPSite(webUrl))

            {

                using (SPWeb web = site.OpenWeb())

                {

                    foreach (SPDocumentLibrary docLib in web.GetListsOfType(SPBaseType.DocumentLibrary))

                    {

                        docLib.EnableVersioning = true;

                        docLib.MajorVersionLimit = 5;

                        docLib.Update();

                    }

                }

            }

        }

    }

}