multi

function multi {
  cmd=$1
  shift
  while [[ $cmd = "ssh" ]]; do
    pre_check="$(echo $@ | tr ' ' '\n' | sed -e 's/^.*@//g' | \
                 xargs nmap -p 22 -PN -oG - | grep Port | grep -v open)"
    test "${pre_check}x" != "x" && (clear; echo "$pre_check") || break
  done
  tmux send-keys -t 0 "$cmd ${@[1]}"
  for ((pane = 1; pane < ${#@[@]}; pane++)); do
    tmux splitw -h
    tmux send-keys -t $pane "$cmd ${@[pane+1]}"
    tmux select-layout tiled > /dev/null
  done
  tmux set-window-option synchronize-panes on > /dev/null
  tmux send-keys Enter
}