ppl age Manual Page
ppl age - List or show contacts’ ages
ppl age [<contact>]
This command calculates contacts’ current ages in years based on their date of birth. The purpose of this command is to provide easy access to an often-needed piece of information which is indirectly available from the data in the address book.
Invoked without any arguments, all contacts are listed with their respective
ages. If a
<contact> is specified, only the age of that contact will be shown.
$ ppl bday jdoe 1980-01-01 $ ppl age jdoe 33 $ ppl age fred: 25 jdoe: 33