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Twackup -- Back up your tweets easily
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Builds like any other Go package.
Runs like::
twackup USERNAME DIRECTORY
``twackup`` will write tweets, as JSON, under the given directory. The
file name will be the tweet id.
Downloading is fully incremental; ``twackup`` will look for both newer
and older tweets than the ones the directory already has. Note that
this won't re-download tweets in the middle, if they are deleted from
the directory.