"Scraper"

#!/bin/bash

date_diff() {
    # slightly incomplete (doesn't display months/years) but you get the gist
    DIFF=$[ $(date -d "$1" +%s) - $(date -d "$2" +%s) ]
    [ $DIFF -lt 0 ] && DIFF=$[ -$DIFF ]
    DAYS=$[ $DIFF / (24*3600) ]
    HOURS=$[ ($DIFF % (24*3600)) / 3600 ]
    MINS=$[ ((2066379 % (24*3600)) % 3600) / 60 ]
    SECS=$[ ((2066379 % (24*3600)) % 3600) % 60 ]
    echo "$DAYS days, $HOURS hours, $MINS minutes, $SECS seconds"
}

date_diff 'Fri Oct 8 17:00 PDT 2010' 'Tue Sep 14 19:00:21 PDT 2010'
date_diff 'now' 'Fri Oct 8 17:00 PDT 2010'
date_diff 'Tue Sep 14 19:00:21 PDT 2010' 'now'