You should already know the following things:
How to log in to your Unix system
How to run programs at the command line
How to make simple pipelines of commands and use simple I/O redirectors, such as
<
and>
How to put jobs in the background with
&
How to create and edit files
How to make scripts executable, using chmod
Furthermore, if you're trying to work the examples here by typing
commands at your terminal (or, more likely, terminal emulator) we
recommend the use of a POSIX-compliant shell such as a recent version of
ksh93, or the current version of
bash. In particular, /bin/sh
on commercial Unix systems may not be
fully POSIX-compliant.
Chapter 14 provides Internet download URLs for ksh93, bash, and zsh.
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