How to convert date to timestamp

Question

I saw this date command:

date -d @1332468005 '+%Y-%m-%d %H:%M:%S'

Resulting in :

2012-03-22 22:00:05

How can I convert it back from 2012-03-22 22:00:05 to 1332468005 with bash shell?

Answer 1

man date will give you the details of how to use the date command.

To convert long date in standard format into Unix epoc time (%s): date -d '2012-03-22 22:00:05 EDT' +%s

Answer 2

MacOS - date -j -f "%Y:%m:%d %H:%M:%S" '2012:03:22 22:00:05' +%s