Re: `date` and timestamp format

[Eric Blake]

> Hello
> 
> I've been trying to print a timestamp format (I mean seconds from 1 Jan 
> 1970) with `date` program from coreutils package.
> There is an option -d but it does not take the numerical timestamp as an 
> input.

Yes it does, with an @ prefix.  From section 27.8 of the 5.3.0 info manual:

For example, on most systems address@hidden' represents 1998-12-31
23:59:59 UTC, address@hidden' represents 1999-01-01 00:00:00 UTC.

--
Eric Blake