Well, ClusterSSH (a version that runs on Linux and uses xterm instances) is one of my everyday administration tools.

It's under 15 identical machines, so it is more trouble than it is worth to set up Puppet or something of that sort.

Oh my!

I use fabric http://fabfile.org/ which is insanely easy to use.

I use it even if I have one machine to deploy to. Better keep them deployments repeatable ...

Still, that makes me write a bit of Python. Not going to do that for a simple symlink change or one-off task of similar complexity.

You can actually do that with Fabric, too.

  fab -H system1,system2,system3 -- uname -a

Thought so too - until I looked at the Update history...

Yes... April Fools.