# File lib/chef/knife/ssh.rb, line 233
      def tmux
        begin
          Chef::Mixin::Command.run_command(:command => "tmux new-session -d -s 'knife'")
        rescue Chef::Exceptions::Exec
        end
        session.servers_for.each do |server|
          begin
            Chef::Mixin::Command.run_command(:command => "tmux new-window -d -n '#{server.host}' -t 'knife' 'ssh #{server.user ? "#{server.user}@#{server.host}" : server.host}'")
          rescue Chef::Exceptions::Exec
          end
        end
        exec("tmux attach-session -t knife")
      end