A SQL database which has Git-like functionality for versioning tables.
A distributed version control system, similar to Git or Mercurial, only it also includes a bugtracker, a wiki, and a blog for collaboration in the same package. Includes a web interface for everything. Can automatically sync with other instances. Self contained.
A short and sweet page about how easy it is to fuck up using git, giving specific examples, and how to get out of those situations.
A helpful github gist that shows how to push a local git repository to a remote Git repo. Step by step. versioncontrol howto backup
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