The Art of Unix Programming. You can browse my newest book here.
If you like it, please order a paper copy. You can get it from Amazon or Barnes & Noble, or direct from Addison-Wesley. The Art of Unix Programming attempts to capture the engineering wisdom and philosophy of the Unix community as it's applied today — not merely as it has been written down in the past, but as a living "special transmission, outside the scriptures" passed from guru to guru. GNU Readline Library: This document describes the end user interface of the GNU Readline Library, a utility which aids in the consistency of user interface across discrete programs which provide a command line interface.
The Readline home page is This chapter describes the basic features of the GNU command line editing interface. 1.1 Introduction to Line Editing The following paragraphs describe the notation used to represent keystrokes. Pentadactyl — Dactyl Home - Pentadactyl. Interactive Vim tutorial - Pentadactyl.