Redirecting output

Now that the theory on input, output, and file descriptors should be clear, we're going to see how we can use these techniques in our command-line and scripting adventures.

It is in fact pretty hard to write shell scripts without using redirection; we've actually used redirection a couple of times in the book before this chapter, because we really needed it to get our stuff done at that time (file-create.sh in Chapter 8, Variables and User Input, for example).

Now, let's get some real experience with redirection out of the way!