We learned a lot about revision control. But probably the biggest is that no Open Source package is really suitable for doing revision control for every/most files on a live system. But I'm getting ahead of myself.
We had somewhat decided to go with svn. The reasons are ...
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After some discussion and prototyping things, a message
was posted by our SVN guru (Paul Lussier) describing what he learned.
You may also be interested in the discussions preceding this. See the following threads:
Comments?