#!/bin/bash
TODAY=$(date +%s)
GRAD=$(date -d 'Jun 14 2008 20:00:00' +%s)
secs=$(($GRAD - $TODAY))

years=$(($secs / 31556926))
secs=$(($secs % 31556926))

days=$(($secs / 86400))
secs=$(($secs % 86400))

hours=$(($secs / 3600))
secs=$(($secs % 3600))

mins=$(($secs / 60))
secs=$(($secs % 60))

echo "$days days, $hours hours, $mins minutes, and $secs seconds until graduation!!"