In this chapter we learned how commands can be linked to each
other, and how input from one command can be used as output for
Input/output redirection is a common task on UNIX and Linux
machines. This powerful mechanism allows flexible use of the
building blocks UNIX is made of.
The most commonly used redirections are > and |. Refer to
Appendix C for an overview of redirection commands
and other shell constructs.
Table 5-1. New commands in chapter 5: I/O redirection
||Display time and date
||Configure shell options.
||Sort lines of text.
||Remove duplicate lines from a