SVN

Check out a working copy (i.e. clone):

svn checkout <url> [path]

Pull latest changes from remote:

svn update

Undo local changes to file:

svn revert <file path>

Undo all local changes:

svn revert --recursive .

Note: For merging and conflict resolution use a GUI (e.g. SmartSVN), and for everything else use git-svn