Getting Help at the Command Line
As you progress through the chapters in Part IV, you'll likely find yourself wanting to know more about some of the commands and topics covered.
Unlike desktop applications, commands that you type at the command line don't have a Help menu within obvious reach. Don't worry, though; nearly every command in Linux is thoroughly documented using one of the two documentation systems briefly mentioned in the preceding chapter. These documentation systems are manual (man) pages and info pages.
Using Manual Pages: The Basics
The manual page is one of the most fundamental command-line tools in any Linux or Unix system. Manual pages are brief, yet complete, online documents that describe how to use a specific command or ...