For the Linux system admins

What is ClusterSSH and what is it used for?

Ever had to make the same change on more than one unix server?

This tool addresses exactly this problem. You run a utility (cssh) giving a couple of server names as parameters, and then xterms opens up to each server with an extra "console" window. Anything typed into the console is replicated into each server window (so you can edit the same file on N machines at the same time).

It is also possible to type into the server windows directly, or temporaily disable replication to one or more of the servers through the "Hosts" menu.

http://clusterssh.sourceforge.net/index.php/FAQ

Enjoy