Fix scanned images with ImageMagick
Years ago while rummaging through the contents of a shelf in a used bookstore, I happened upon a booklet titled "UNIX System Command Summary for Berkeley 4.2 & 4.3 BSD," published by Specialized Systems Consultants. I bought it as a curiosity item because it was nearly 20 years old yet still largely applicable to modern Linux and BSD.
That amused me then and now. A booklet written in 1986 was still largely relevant in 2016, while books on the same shelf about a proprietary OS weren't worth the paper they were printed on. (Think about it: What technology do you think is going to survive a zombie apocalypse?) I've had the booklet on my own bookshelf for several years now, but it occurred to me that it's probably worth doing a little digital preservation of this artifact, so I decided to scan the booklet to create a CBZ ebook.