Update usage.rst

Addalin · Mar 21, 2020 · 6fc215c · 6fc215c
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diff --git a/docs/source/usage.rst b/docs/source/usage.rst
@@ -152,6 +152,8 @@ Useful commands
 - `etcher <https://www.balena.io/etcher/>`_ to flash image onto the SD card
 - ``grep -a -e "Unregistering worker 236" -e "Registering new worker 236" cameralog_190929_092735_proxy.txt``
     to see connections and disconnections. replace log.txt with * for all logs in folder.
+- ``du -h --max-depth=1 | sort -hr`` to see size of all subfolders     
+
 
 
 Data Structures