diff --git a/source/_posts/2016-08-09-unit-system.markdown b/source/_posts/2016-08-13-foursquare--fast.com--ffmpeg--gpsd.markdown
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rename from source/_posts/2016-08-09-unit-system.markdown
rename to source/_posts/2016-08-13-foursquare--fast.com--ffmpeg--gpsd.markdown