Search - jcb91/IPython-notebook-extensions-wiki GitHub Wiki
Simple search extension based on codemirror addon. Adds a search box to the notebook toolbar and selects search word if found.

Searches the whole notebook in markdown or code cells.
A/a toggles case-sensitive search
RegEx allows entering regular expressions as search term (not tested)
Installation
Follow the installation instructions appropriate to your IPython version as explained on the main wiki home pages: