On Tue, Jun 10, 2003 at 09:32:53AM -0400 Rick Ressegger wrote:
> If I want to know what version of a module is already installed on a system,
> how can I disclose this?
Either use Janek's suggestion or ask for the value of $VERSION for the
module in question:
perl -MSome::Module -e 'warn Some::Module->VERSION'
> Can multiple versions of a module exist in a library or does one get
> superceded by another that is installed later?
Usually older versions are replaced by newer versions. But see
http://search.cpan.org/author/INGY/only/
which allows you to install as many versions of a module as you want.
For that see "INSTALLING MULTIPLE MODULE VERSIONS" in the docs of
'only'.
Once you have several versions you can explicitely specify to use a
particular version of that module. That's also laid out in the docs.
Tassilo
--
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