testing for modules?

[Ed Hotchkiss]

i have a generic script that is using several modules on windows and linux boxes. i need to have the scripts test if a module is installed, and then if not - then to install the module. can anyone give me a headsup on how to test for a module, returning something to indicate whether or not it is installed, then after that executing file to install the module.? just somewhere to start would be helpful! thanks in advance.

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edward hotchkiss

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