True. I am always open to alternate ways of doing things. I have spent some time tooling tmux to meet my needs. There are other options for dealing with a large number of machines. I can perhaps deal with 10 machines concurrently with tmux, more if I push it. There’s an SSL option whose name escapes me.

Sorry for taking so long to respond to this. The notification wound up in my spam filter!!!

You can do that with GNU Screen too, so we have 3 tools to do the same task ;)

@Fred,
If tmux meets all your needs, that’s great! One of the wonders of the FOSS ecosystem is that there are several ways to get things done. A simple example: you can change the group ownership of a file (let’s call it file1) to my_group with either of the following two commands:
chown :my_group file1
chgrp my_group file1
Of course we can have different opinions as to what is the best / most effective way to do things, but as long as the tools and the commands we choose get the job done, that’s a great thing IMHO.