If you're reading this publication, you already know that Linux is one of the most powerful and versatile operating systems available today. If you're an old-timer like me, you also know all about the ...

Linux commands can make use of standard streams for input, output, and error messages. Redirection sends an output stream to a file instead of the terminal window ...

The first line writes "hello world" to the file "output", the second reads it back and writes it to standard output (normally the terminal). A "here" document is essentially a temporary, nameless file ...