HP-UX 11i System Administration Handbook and Toolkit, Second Edition

Redirection

Before we cover viewing files, let's talk about redirection for a minute because I use some redirection in the upcoming section. I cover redirection under shell programming, but for now, I want to give you just a quick introduction to redirection so that we can more effectively cover some of the commands in this chapter.

UNIX is set up such that commands usually take their input from the keyboard, often called standard input, and usually send their output to the screen, often called standard output. Commands also send error information to the screen. It is not always desirable for input to come from standard input and output and errors to go to standard output. You are given a lot of control to override these defaults. This is called ...