/usr/share/pyshared/IPython/frontend/html/notebook/static/codemirror/ is in ipython-notebook 0.12.1+dfsg-0ubuntu1.
This file is owned by root:root, with mode 0o755.
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/usr/share/pyshared/IPython/frontend/html/notebook/static/codemirror/README-IPython.rst
/usr/share/pyshared/IPython/frontend/html/notebook/static/codemirror/README.md
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