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Chapter 5. I/O redirection
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