5931 lines here. 25 lines per page of a novel seems reasonable.

~240 pages for man bash

Google says the grapes of wrath has 464 pages.

I call that a similar ballpark. If I had an English exam with Steinbeck as one of the set texts just once I would read every word of it. I have a shell exam every damn day I work rest and play. Do you? Is skimming seeming more reasonable in that light?