Share an interactive ssh session b/n two users with ‘tmux’

I recently started using tmux, a terminal multiplexer much similar to GNU screen(which I still use on a lot on RHEL machines). Personally, I find tmux more elegant and less cryptic while configuring. Specially, sharing interactive(or read-only) ssh sessions w/ remote folks for debugging is very trivial.

Get it:

  $ yum install tmux -y   

Create a tmux session(let’s say on testbox1) by specifying path to a socket(its name can be anything)to be used:

 $ tmux -S /var/tmp/share-ses 
# Where -S is the absolute path to the server socket.

Now, to share the above created session w/ a remote user, ask the person to ssh into testbox1, and then try the below for sharing a session interactively or read-only mode:

• Read/Write session, so that both users can interactively edit on the shell:

 $ tmux -S /var/tmp/share-ses attach 

• For ‘Read-Only’ session(for remote user) :

$ tmux -S /var/tmp/share-ses attach -r 
# Where r is 'read-only' mode for the remote user,
# so he/she can just 'watch' the session.

To detach from the session: $ tmux detach (or use the binding — Ctl+b d when in ‘read-only’ mode)