Fast way to find occurance of a string or a regular expression among files under git control (i.e. omitting junk files)
! git grep TODO
02b-Python-Fundamentals-Conditionals.ipynb: "In the code cells below replace TODO with appropriate checks and manipulate values of x, y, z to trigger all conditions to verify they are correct" 02b-Python-Fundamentals-Conditionals.ipynb: "if TODO:\n", 02b-Python-Fundamentals-Conditionals.ipynb: "if TODO:\n", 02b-Python-Fundamentals-Conditionals.ipynb: "if TODO:\n", 02b-Python-Fundamentals-Conditionals.ipynb: "if TODO:\n", 03c-Python-Fundamentals-Containers-Dicts.ipynb: "dict(TODO)" 03c-Python-Fundamentals-Containers-Dicts.ipynb: " # TODO magic, try to come up with 1 line solution\n",