While the book is awesome. And I guess there is a story some where that a programmer working with Aho even build CAD software with awk. Its often not an effort

While the book is awesome. And I guess there is a story some where that a programmer working with Aho even build CAD software with awk. Its often not an effort for the faint hearted, even to maintain. Without unit tests, exceptions, and myriad other features, you are doing too much of 'building universe to make apple pie' sort of work to get anywhere. Same with shell. You begin to give on it for non trivial work.