"Ever had to make the same change on more than one Linux/unix
server? Find it annoyingly painful to keep repeating the exact same
commands again and again and again?
"This tool addresses exactly this problem. You run a utility
(cssh) providing a number 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, for examples, you can edit the same file on N machines
at the same time, or run the same commands with the same parameters
across those servers)..."