Start multiple synchronized SSH connections with Tmux

tmux-ssh

#!/bin/bash

# SSH into multiple hosts with each in their own tmux pane.

if [ "$#" -lt 1 ]; then
        cat >&2 <<-EOM
Usage: $(basename $0) host1 [ host2 ... ] [ -- ssh options ]
EOM
        exit 1
fi

hosts=()

for opt; do
        case "$opt" in
                --)
                        shift
                        break
                        ;;
                *)
                        hosts+=( "$opt" )
                        shift
                        ;;
        esac
done

host=${hosts[0]}
unset hosts[0]

for i in "${hosts[@]}"; do
        tmux split-window -h ssh "$i" $@
done
tmux select-pane -t 0
tmux select-layout tiled
tmux set-window-option synchronize-panes on

exec ssh "$host" $@

I pushed it a little bit further to the following:
https://gist.github.com/svenXY/2e8a7a8d42cc99ada7cf18bdfbaa5ea3