From: Josef 'Jupp' Schugt <jupp@...>
Date: 2003-06-04T07:18:05+09:00
Subject: Re: case of sub! not working

Saluton!

* Emmanuel Touzery; 2003-06-03, 11:06 UTC:
> > ENV['foo'] = 'bar'
> >
> > p `echo $foo`

Let me add the result of the above code:

"bar\n"

> wow, nice :O)
> 
> didn't know that...

Please make sure you really do understand the whole issue:

$ ruby -e "ENV['foo'] = 'bar'"; echo "'$foo'"
''

The change is not persistent but limited to the environment your Ruby
script runs in - which is *not* the environment the script is started
from but discarded after run. As a result the above code only has
limited use. But that's a Linux/Unix FAQ, no Ruby FAQ ...

Gis,

Josef 'Jupp' Schugt