TAILIEUCHUNG - Module Linux essentials - Module 5: Getting help

This chapter guide students how to use the command line to get help. After studying this chapter students should be able to utilize the man and info commands for finding more information. | Module 5 Getting Help Exam Objective Using the Command Line to Get Help Objective Summary Utilizing the man and info commands for finding more information Introduction to the man command man pages Man pages are usually available for commands, functions or files Man pages are available on the local system Practice makes perfect! Just as you practice executing Linux commands, you should practice reading man pages to become a more capable user Viewing man pages To vew a man page, first access a terminal or console and type man command or man file. Controlling the man page display The man page will be displayed by a pager program, either less or more (less is usually used). Both pagers use h to view help, spacebar to move forward, / to start a search and q to quit. Less movement commands: Command Function Command Function Return (or Enter) Go down one line 1G Go to beginning Space Go down one page G Go to end /term Search for term h Display help n Find next search item q Quit man page Man page sections The word sections has two important meanings for man pages. Each man page is broken down under different section headings like NAME, SYNOPSIS and DESCRIPTION. Every man page is categorized into a particular section like user commands, file formats, or system administration. Common sections of a man page Section name Purpose NAME Provides the name of the command and a very brief description. SYNOPSIS Provides examples of how the command is executed. See below for more information. DESCRIPTION Provides a more detailed description of the command. OPTIONS Lists the options for the command as well as a description of how they are used. Often this information will be found in the DESCRIPTION section and not in a separate OPTIONS section. FILES Lists the file that are associated with the command as well as a description of how they are used. AUTHOR The name of the person who created the man page and (sometimes) how to contact the person. REPORTING BUGS Provides details on .

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