I have a hash table with lets say .. 50-100 dates ..

they are formated like:

Fred
4 years 6 months 28 days 7 hours 44 minutes 50 seconds

[greeg]
28 days 7 hours 44 minutes 50 seconds

-mark-
44 minutes 50 seconds
ect. ...

I want a script that will search the hash table
and find the oldest date from the list

in other words the longest time listed ...

LOL i cant do it ..
also would like a small script to take all the times listed and add them together for a total time of all data ...

but the first one is what i really need ..

HELP !?