I know, we all love the shell, but it gets really interesting, when I start using shell kung-fu to do strenuous tasks!

I wanted to create 5 new places in my subversion repository, each with trunk/tags/branches folders. I did it like this:

svn mkdir https://svn.myserver.com/{project1,project2,projects3}/{,tags,branches,trunk} -m"init"

And done.