Studying Professor Dalgaard's code a bit, here is a little hack that
returns the desired result on Unix-alikes:
From
>* system2("echo", env = c("VAR='Hello World'"), args = c("$VAR"))*
to
>* system2("echo", env = c("VAR='Hello World';"), args = c("$VAR"))*
Hello World
That is, adding the semi-colon effectively transforms
pd$ VAR="foo" echo $VAR
to
pd$ VAR="foo"; echo $VAR
Maybe this doesn't apply to more complicated situations,though.
luke
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