Get Current date in epoch from Unix shell script

Question

How to get the current date value in epoch i.e., number of days elapsed since 1970-1-1. I need solution in unix shell script.

Answer 1

Depending on the language you're using it's going to be something simple like

CInt(CDate("1970-1-1") - CDate(Today()))

Ironically enough, yesterday was day 40,000 if you use 1/1/1900 as "day zero" like many computer systems use.