#!/bin/bash

DEFAULTMIDDLEHOST="elvis"
FINALHOST="$1"

if [ -e $FINALHOST ]; then
    echo "usage: "`basename "$0"` "hostname [via=elvis]"
    exit 1;
fi

if [ -e $2 ]; then
    MIDDLEHOST="$DEFAULTMIDDLEHOST"
else
    MIDDLEHOST="$2"
fi

ssh -t -A "$MIDDLEHOST" ssh "$FINALHOST"

exit $?