SUSE Linux Enterprise Desktop Administration

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					SUSE Linux Enterprise Desktop
       Administration



           Chapter 3
 Locate and Use Help Resources
                        Objectives

• Objective 1—Access and Use man Pages
• Objective 2—Use info Pages
• Objective 3—Access Release Notes and White
  Papers
• Objective 4—Use GUI-Based Help
• Objective 5—Find Help on the Web




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   Objective 1—Access and Use man
               Pages
• man command
   – The most important command for online help
• All manual pages are available in English
   – And many have been translated into other languages
• To display the English version of the man page for
  the man command
   – LANG=en_EN man man




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   Objective 1—Access and Use man
           Pages (continued)
• The first page of the manual pages




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   Objective 1—Access and Use man
           Pages (continued)
• Parts of a manual page




 Table 3-1 Parts of a manual page

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   Objective 1—Access and Use man
           Pages (continued)
• The program man uses the program less to display
  the manual pages
   – Within less, the display of text is controlled by the keys
     shown in Table 3-2
• The manual pages are organized in the sections
  shown in Table 3-3
• It is especially important to know to which section a
  command belongs
   – When the command has more than one manual page


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 Table 3-2 less command keys

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   Objective 1—Access and Use man
           Pages (continued)




 Table 3-3 Sections in manual pages




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   Objective 1—Access and Use man
           Pages (continued)
• You can display a brief description of all the available
  manual pages for a command or utility
   – By using the whatis command
• Manual pages are located in the directory
  /usr/share/man/




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   Exercise 3-1: Access and Use man
                 Pages
• In this exercise, use the whatis and man
  commands to get information on the info command
   – In the manual page, look for filename




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        Objective 2—Use info Pages

• A whole series of programs are no longer provided
  with manual pages
   – Instead, info files are used, which can be read with the
     info command
• info files are located in the directory
  /usr/share/info/
• Advantages of the info file format:
   – It uses a structured document setup
   – Specific sections can be reached directly from the
     table of contents
   – Specific sections can be linked
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        Objective 2—Use info Pages
                (continued)
• The beginning of the info file for the info command




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 Table 3-4 Most commonly used key commands for the info command


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   Exercise 3-2: Access and Use info
                 Pages
• In this exercise, use the info command to get
  information on info and navigate through the info
  text




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  Objective 3—Access Release Notes
           and White Papers
• Release notes, white papers, and other sources of
  helpful information
   – Stored in the directory /usr/share/doc/
• This directory contains the following:
   –   Release Notes
   –   Manuals
   –   Help for Installed Packages
   –   HOWTOs



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                    Release Notes

• When you complete the installation of SUSE Linux
  Enterprise Server
   – The release notes appear in a window
       • See Figure 3-1
• You can find them in various languages in the
  directory /usr/share/doc/release-notes/SUSE_Linux
  Enterprise_Desktop__10/




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    Figure 3-1 SUSE Linux Enterprise Desktop release notes


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                         Manuals

• A PDF version of the manual is in
  /usr/share/doc/manual/sled deployment_en/
• If you prefer HTML, an HTML version is available in
  the manual/subfolder




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         Help for Installed Packages

• Help files are available in the following directory for
  most installed packages:
   – /usr/share/doc/packages/package-name/
• These help files are written by the programmers of
  the package
   – Therefore, the format of these files is not standardized




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                        HOWTOs

• You can find additional information (including
  background material) in the howtos
• A howto is available for almost every imaginable
  topic in Linux
• You can find a list of all current howtos at
  www.tldp.org




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   Objective 4—Use GUI-Based Help

• An online help tool is available for graphical
  applications
   – See Figure 3-2
• To start the online help, select Computer > More
  Applications > System > Yelp
   – Use the links to navigate through the content
   – You also can use the search function to speed up
     your search for help
• The online help is available in most GNOME
  applications and can be started by pressing F1
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            Figure 3-2 GUI-based help

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   Objective 5—Find Help on the Web

• Some of the more frequently used Linux sites:
   – www.novell.com/linux
   – www.tldp.org
   – www.cert.org (especially for security issues)
   – www.securityfocus.com (especially for security
     issues)
   – www.kernel.org (especially for issues in connection
     with the Linux kernel)
   – www.novell.com/coolsolutions/ (follow the links on
     Linux)

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  Exercise 3-3: Access Release Notes
      and Find Help on the Web
• In this exercise, you access release notes and find
  help on the Web
• Use the Nautilus file manager to access the release
  notes in /usr/share/doc/releasenotes/
• Start Firefox and access the Linux Documentation
  Project at www.tldp.org
   – Look for updates for SUSE Linux Enterprise Desktop
     10 on the Novell support Web site
• Then, use the Google Linux search engine to find
  information on GNOME and SLED10 in the Internet
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                         Summary
• There are several help resources available locally on
  your SUSE Linux system as well as on the Internet
• The manual pages contain the syntax and usage of
  most commands and files on your system
• The info pages are an alternative to the man pages
  that format information differently and can contain
  links to other sections
• The /usr/share/doc directory contains the manual and
  release notes for the SUSE Linux installation


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