Question:

How to Convert the date and time stamp to epoch time?

Answer:

In the bash shell, the command to get the epoch time stamp is "date +%s" (no quotes), but that returns the current epoch time.

You could build a shell function (script) to calculate the equivalent epoch time using the following information:

The current epoch time consists of the number of seconds since midnight, January 1, 1970.

1 minute = 60 seconds

1 hour = 3600 seconds

1 day = 86400 seconds

1 week = 604800 seconds

1 month (30.44 days) = 2629743 seconds

1 year (365.24 days) = 31556926 seconds

This information (and much more) comes from Epoch Converter.

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