Re: [gentoo-dev] how to determine if a virtual is installed, from the shell?

[Spider <spider@gentoo.org>]

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On Mon, 18 Aug 2003 22:31:47 -0400
Owen Gunden <ogunden@stwing.upenn.edu> wrote:

> So hypothetically, if I wanted to write a shell script that behaved
> differently if virtual/mta was installed than if it was not, what
> would I do?
> 
> I'd like a command that would return a specific exit status based on
> whether or not the virtual dependency is there.  But frankly I'm
> willing to use grep for a nice gross hack too.  Tell the truth, I
> don't even know how to do this for regular (non-virtual) packages.
> 
> I've played around with qpkg, but with little luck.  Is there any way
> to do this with or without qpkg?
> 


cat /var/cache/edb/virtuals   ...  this should give you the format
enough to work shell magic with it :)


//Spider


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