On Mon, Mar 06, 2006 at 08:08:35AM -0500, Haines Brown wrote:
> $ echo $DISPLAY
> :0.0
>
> $ sudo echo $DISPLAY
> :0.0
> That seemed OK, but when I did:
> $ sudo env | grep DISPLAY
> [nothing returned]
> Why do I get inconsistent results? In the first case, the
> value of DISPLAY is known, but in the second when I use
> env, it is not found in the environment accessed by sudo.
In the first case, the shell expands $DISPLAY on the
command-line before sudo is executed.
sudo no longer lets DISPLAY through without you telling it
to first: actually, sudo has changed from a blacklist to a
whitelist model for environment variables. see
http://bugs.debian.org/349729 for instructions on
workarounds (and there's quite a few similar/related bugs
filed against sudo at the moment, too)
--
Jon Dowland
http://alcopop.org/
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