[openbeos] Scripting (Shells)

Being a compulsive scripter I have to ask this:

Is there an applet that determines if the GUI is available or can I just check
$DISPLAY ??? If there is no Applet does anyone know roughly where in the API a
system call for this might be? Sometimes you need to check your not in a telnet
session.

On the same topic. Discalmer: there is no one right shell or scripting
language. But it would be nice to have csh for those familiar with it, and SSH.

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