ENV file in ksh: is this smart? legal?

[Leslie Mikesell]

In article <10920 at smoke.BRL.MIL> gwyn at brl.arpa (Doug Gwyn) writes:

>The overhead of
>sourcing $ENV as opposed to carrying the LARGE amount of extra environment
>around with every process seems to be a good trade-off.

Is this still true if you have fork() with copy-on-write?

Les Mikesell