Get date and time as Unix epoch

Problem. You want the current date and time as a Unix epoch. That is, roughly speaking, as number of seconds since 01-Jan-1970.

Solution.

DateAndTime now unixTimeSeconds .    "=> 1629056092 "

Exercise. Get the same number running the Linux date command as an external program.
Exercise. Read the method DateAndTime#unitTimeSeconds.

---

NM on 15-Aug-2021. Tested in Cuis5.0-4738.image