This script was inspired by the Days Alive and Countdown Timer glets. It primarily uses westernmagic's one line .sh script, just reversed. After you change the values "3/10/1970 00:54:00" to your own this will display the total elapsed time since your birth, right down to the second. If you don't know the exact time you were born you can just put 00:00:00.
Input the day/month/year and time (optional) In the quotes directly after:
expr `date -j -f "%d/%m/%Y %H:%M:%S"
That's it! Time is ticking — make the most of it. ;-)
