GNU date difference?

[Paul D. Smith]

On Solaris and other UNIXen I was able to use this little trick to get
_tomorrows_ date, and it always worked:

$ TZ=EST5EDT-24 date +%d

The output of this, if today is 05 Nov, would be "06".

On my Debian Linux box, using shellutils 2.0i (Debian package 2.0i-1),
this doesn't work:

$ TZ=EST5EDT-24 date +%d
05

Same day. In fact, I can add or subtract any value from the timezone in
TZ, and I always get back today's date.

I realize I could do something like "date --date=tomorrow +%d", but
that's not very portable.

Is the TZ trick not portable, either, or is this a missing feature in
GNU date, or what?

Thx.

--
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Paul D. Smith <psm...@baynetworks.com> HASMAT--HA Software Methods & Tools
"Please remain calm...I may be mad, but I am a professional." --Mad Scientist
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