I typically store the repositories i am working on under D:\Code. Each morning i had to right click on each of those folders and select ‘SVN Update’ using Tortoise SVN. Today i decided there had to be a better way to accomplish this tedious task:

dir d:\code | foreach { svn update $_.FullName }

And in case you really like tortoise, you can do the following:

dir c:\code | foreach { tortoiseproc /command:update /closeonend:1 /path:$($_.FullName) }