Dirty script to connect to a cluster using nmap!

ctrl.sh

#!/bin/zsh

RUSER="ubuntu"
IFS=$'\n' HOSTS=($(nmap -oG - -sn -n 192.168.11.128-254 | grep 'Host: ' | cut -f 2 -d ' '))

WIDTH=$(tput cols)
DIV=$#HOSTS
SP=$(( $WIDTH / $DIV ))

for ip in $HOSTS; do
        CMD="ssh -i somesshid_rsa $RUSER@$ip"
        if [[ $HOSTS[1] == $ip ]]; then
                tmux new-session -d "$CMD"
        else
                tmux split-window -h "$CMD"
                tmux select-pane -L
                tmux resize-pane -x $SP
                tmux select-pane -R
        fi;
done

tmux a