adding option to date to specify date in unix format (seconds since epoch)

[Matus UHLAR - fantomas]

Hello,

I've seen this request ocasionally appear in archive of this list (and
sh-utils before). The FreeBSD's date has such option:

-r seconds
        Print the date and time represented by seconds, where seconds is
        the number of seconds since the Epoch (00:00:00 UTC, January 1,
        1970; see time(3)), and can be specified in decimal, octal, or
        hex.

Wouldn't you mind adding such option (although not -r, because it's already
used) to GNU date too? The usually mentioned way: 

date -d '1970-1-1 UTC <number> seconds'

is an ugly workaround to get the requested result...

-- 
Matus UHLAR - fantomas, address@hidden ; http://www.fantomas.sk/
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