Chapter 5. I/O redirection

Table of Contents

5.1. What are standard input and standard output?

5.1.1. The redirection operators
5.1.2. Advanced redirection features
5.1.3. Filters

This chapter describes more about the powerful UNIX mechanism of redirecting input, output and errors. Topics include:

Standard input, output and errors
Redirection operators
How to use output of one command as input for another
How to put output of a command in a file for later referrence
How to append output of multiple commands to a file
Input redirection
Handling standard error messages
Combining redirection of input, output and error streams
Output filters