Re: coreutils don't accept time_t value

[Eric Blake]

> It used to be possible with the coreutils to convert a time_t value, as
> produced by date +%s, back into a time which can be used by date and
> touch:

It still is.   The info pages ("info coreutils date") recommend:
 To convert such an unwieldy number of seconds back to a more
 readable form, use a command like this:

      # local time zone used
      date -d '1970-01-01 UTC 946684800 seconds' +"%Y-%m-%d %T %z"
      1999-12-31 19:00:00 -0500

Or, see "info coreutils 'seconds since'" where you will see the
new, shorter syntax for seconds since the epoch is:

date -d @946684800
Fri Dec 31 17:00:00 MST 1999

> 
> > date -u -d "70-1-1 00:00:`date +%s`"
> date: invalid date `70-1-1 00:00:1146711463'
> > date --version
> date (GNU coreutils) 5.3.0

5.3.0 was an unstable release.  Consider upgrading to the
latest stable release, 5.94.

-- 
Eric Blake