Linux: how to set up a timezone of a process?

I'd need to set timezones of individual processes started on a linux box. I tried setting TZ variable (in the local context), but it didn't work.

Is there a way of running an app from a command line with a different system date to the system one? It might开发者_Go百科 sound stupid, but I need a kind of a sandbox where the system date would be changed.

Starting a virtual box is not an option ;)

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Which program do you use? Setting TZ works here:

turboj@linux:~> date
Do 2. Sep 11:59:26 CEST 2010
turboj@linux:~> export TZ=UTC
turboj@linux:~> date
Do 2. Sep 09:59:34 UTC 2010

Maybe you forgot to "export"?

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You might want to try something similar to dateshift or libfaketime, both of which let you run a program with offset time.