For those who often have to work with several ssh session / several servers at the same time, Terminator Terminal ( that you can install) has a very cool broadcast mode…
I have 2 group of 6 servers and I often time to do the exact same thing on those servers and the Broadcast feature allows us to Paste or type something that will be boradcast to all servers in the broadcast group, at the same time
For me it’s very useful…
Wanted to share 
yoda