* To take full advantage of grep, you really need to grok regex; however, regex is a book all in itself, so we're only going to cover the basics here.
* There isn't any software! Only different internal states of hardware. It's all hardware! It's a shame programmers don't grok that better.
* Trying to just read through a textbook is, except for a select few, not an effective way to really grok mathematics.
* Most software developers on the otherhand do not grok math, however they surely do grok code.