On Wed, Feb 04, 2009 at 04:25:16PM -0600, Jeff Nelson wrote:
> Dan Rue wrote:
> > $ date -r 1234567890
> > Fri Feb 13 17:31:30 CST 2009
> 
> What implementation of 'date' are you using? On Ubuntu Ibex I get:
> 
> $ date -r 1234567890
> date: 1234567890: No such file or directory
> 
> Nor can I find an option that reproduces your results.
> 
> Thanks.

I used date on FreeBSD.

It took me a while to find this, but here's the ugly gnu equivalent: 

# date -d '1970-01-01 UTC 1234567890 seconds'
Fri Feb 13 17:31:30 CST 2009

Dan