How to convert Unix timestamps to human readable date format in Bash?

I recently got asked how to convert Unix timestamps to human readable date format in Bash.

Here is an example of how to generate a Unix timestamp using the date command:

date +%s

This will output a long string of numbers like this:

1606319820

This number represents the seconds since 00:00:00 UTC on 1 January 1970.

So here’s how to convert Unix timestamps to human readable date format in Bash!