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Red Hat NETWORK - USER REFERENCE GUIDE 3.1 User Reference Manual

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  • Page 1 Red Hat Network User Reference Guide 3.1...
  • Page 2 ISBN: N/A Red Hat, Inc. 2600 Meridian Parkway Durham, NC 27713 USA +1 919 547 0012 (Voice) +1 919 547 0024 (FAX) 888 733 4281 (Voice) P.O. Box 13588 Research Triangle Park, NC 27709 USA © 2001 Red Hat, Inc. RHNurg(EN)-3.1-Print-RHI (2001-09-05T14:52-0400) Copyright ©...

  • Page 3: Table Of Contents

    Contents Red Hat Network Introduction .................. . v Document Conventions..............v More to Come .
  • Page 4 Choosing Packages to Update ..........36 Installing Updated Packages ........... . 39 Update Agent Finished...

  • Page 5: Introduction

    All version of this manual are available in HTML and PDF formats at http://www.redhat.com/docs/manuals/RHNetwork/. Once you use Red Hat Network to update these applications, you can use the latest version of this manual.
  • Page 6 Introduction The /usr/share/doc directory contains documentation for various programs. Install the webalizer RPM if you want to use a Web server log file analysis program. application This style should indicate to you that the program named is an end-user application (as opposed to system software).

  • Page 7: Document Conventions

    Section 0.1:Document Conventions Click on the button to return to the Web page you last viewed. Back computer output When you see text in this style, it indicates text displayed by the computer on the command line. You will see responses to commands you typed in, error messages and interactive prompts for your input during scripts or programs shown this way.

  • Page 8: More To Come

    The Red Hat Network User Reference Guide is constantly expanding as new Red Hat Network features and service plans are launched. Send in Your Feedback If you would like to make suggestions about the Red Hat Network User Reference Guide, please men- tion this guide’s identifier: RHNurg(EN)-3.1-Print-RHI (2001-09-05T14:52-0400) You can send mail to: rhn-feedback@redhat.com...

  • Page 9: Chapter 1 What Is Red Hat Network

    Network Registration Client for further information). You can use either of the two Red Hat Network user interfaces: • Software Manager Web interface available at http://rhn.redhat.com • The Red Hat Update Agent Both the Web interface and the Red Hat Update Agent allow you to view all Errata Alerts included in the Red Hat Errata list.

  • Page 10: Software Manager

    Registering a system with Red Hat Network is free as well as one subscription to Software Manager. Additional subscription to Software Manager can be purchased at http://rhn.redhat.com/purchase_info.pxt. With each Software Manager subscription, you receive: •...

  • Page 11: Security, Quality Assurance, And Red Hat Network

    Red Hat’s GNU Privacy Guard (GPG) signature to ensure authenticity. Red Hat Network incorporates the following security measures: Your System Profile available at http://rhn.redhat.com is only accessible with the correct user name and password. 2. A Digital Certificate stored on the client system in the file /etc/sysconfig/rhn/systemid after registration is used to authenticate the system during each transaction between the client and Red Hat Network.
  • Page 12 If the packages are not installed, they can be found on the Red Hat Linux 7 or higher CD-ROM #1 in the RedHat/RPMS directory or downloaded from the Red Hat FTP site available at ftp://ftp.redhat.com (or from a Red Hat FTP mirror available at http://www.redhat.com/mirrors.html). Always check the Red Hat errata page, available at http://www.redhat.com/errata/, for package updates.

  • Page 13: Chapter 2 Red Hat Network Registration Client

    Client before registering their systems. Do not attempt to use this option unless you are required to. To start the configuration tool, use the command: rhn_register --configure You will be presented with a list of options and their current values: enableProxyAuth noSSLServerURL http://www.rhns.redhat.com/XMLRPC enableProxy httpProxy proxyUser serverURL https://www.rhns.redhat.com/XMLRPC proxyPassword debug Enter number of item to edit <return to exit, q to quit without saving>:...

  • Page 14: Starting The Red Hat Network Registration Client

    Chapter 2:Red Hat Network Registration Client If you require a proxy username and password, change the values of numbers 0, 4, and 6. Set en- ableProxyAuth to Yes to enable username/password authentication for the proxy. Set prox- yUser and proxyPassword to the appropriate username and password for the proxy. 2.2 Starting the Red Hat Network Registration Client You must be root to register a system with RHN.
  • Page 15 Red Hat Network Registration process is used to create a System Profile. The System Profile is essential if you wish to receive update notifications about your system. If you have any questions about how your information is being used, please contact us at feed- back@redhat.com.

  • Page 16: Registering A User Account

    Chapter 2:Red Hat Network Registration Client Figure 2–3 Red Hat Privacy Statement 2.3 Registering a User Account Before you can create a System Profile, you must create a user account. The only required information in this section is a unique user name and password and a valid email address. In the screen shown in Figure 2–6, Create a Unique User Name and Password, you must choose a user name and password.
  • Page 17 Figure 2–4 Error: Username Already Exists Note If you are already a member of redhat.com, you can use the same user name and password. However, you will still need to continue with the registration process to create your System Profile.
  • Page 18 Chapter 2:Red Hat Network Registration Client Figure 2–5 Warning: This System Already Registered If you have already registered a machine and created a System Profile, you can add a new machine to your account. Run the Red Hat Network Registration Client on the new machine you wish to add and enter your existing Red Hat Network user name and password.

  • Page 19: Registering A System Profile

    Section 2.4:Registering a System Profile Most users can leave the section blank. If you have an existing organization account, enter Org Info your organization’s ID and password in the provided text fields. If the values are valid, the system will be added to the organization’s Red Hat Network account. Click to continue.
  • Page 20 Chapter 2:Red Hat Network Registration Client Figure 2–7 System Profile - Hardware 2.4.2 Software System Profile The software System Profile consists of a list of RPM packages for which you wish to receive notifi- cations. The Red Hat Network Registration Client shows you a list of all RPM packages listed in the RPM database on your system and then allows you to customize the list by deselecting packages.
  • Page 21 Section 2.4:Registering a System Profile Figure 2–8 Registration Wizard Once the RPM package list is built, the list will be displayed as shown in Figure 2–9, RPM Package Information. Deselecting Include RPM Packages installed on this system in my System Profile will omit this information from your System Profile.

  • Page 22: Finishing Registration

    Chapter 2:Red Hat Network Registration Client Profile shows that the , and packages have been omitted from the package procmail procps psgml list. Choose which packages to exclude from the system profile, and click to continue with the regis- Next tration process.
  • Page 23 You will know your System Profile has been successfully sent when you see the Registration Finished to exit the Red Hat Network Registration screen (Figure 2–13, Registration Finished). Click Finish Client. After completing registration, visit http://rhn.redhat.com to verify your System Profile and make any changes.

  • Page 24: Entitling Your System

    Software Manager subscription after creating an account through registering a system for RHN or creating a redhat.com account. To entitle a system, go to http://rhn.redhat.com and login using the same username and password you just used in the Red Hat Network Registration Client. On the left navigation bar, click...

  • Page 25: Text Mode Rhn Registration Client

    Section 2.7:Text Mode RHN Registration Client 2.7 Text Mode RHN Registration Client You can force the Red Hat Network Registration Client to run in text mode with the command: rhn_register --nox The screens for the Text Mode Red Hat Network Registration Client are almost identical to the screens for the graphical version of Red Hat Network Registration Client.
  • Page 26 Chapter 2:Red Hat Network Registration Client...

  • Page 27: Chapter 3 Red Hat Update Agent Configuration Tool

    Section 3.2:General Settings 3 Red Hat Update Agent Configuration Tool Before using the Red Hat Update Agent, you should configure the settings. This can be done with the Red Hat Update Agent Configuration Tool. If you are not running the X Window System or prefer the command line version, skip to Section 3.5, Command Line Version of Red Hat Update Agent Configuration Tool .

  • Page 28: Retrieval/Installation Settings

    Chapter 3:Red Hat Update Agent Configuration Tool Figure 3–1 General Settings 3.3 Retrieval/Installation Settings The Retrieval/Installation tab allows you to customize your software package retrieval and package installation preferences. Note You must use Red Hat Update Agent Version 2.5.4 or higher to upgrade your kernel automatically.
  • Page 29 Section 3.3:Retrieval/Installation Settings Figure 3–2 Retrieval/Installation Settings The following retrieval options can be selected (see Figure 3–2, Retrieval/Installation Settings): • — download selected RPM packages to desired directory Do not install packages after retrieval and ignore the installation preferences • —...

  • Page 30: Package Exceptions Settings

    Chapter 3:Red Hat Update Agent Configuration Tool • — override the Red Hat Linux version in your System Override version stored in System Profile Profile • — change the directory where packages are downloaded; the default Package storage directory location is /var/spool/up2date 3.4 Package Exceptions Settings The Package Exceptions tab allows you to define which packages to exclude from the list of updated RPM packages according to the package name or file name (see Figure 3–3, Package Exceptions Set-...

  • Page 31: Command Line Version Of Red Hat Update Agent Configuration Tool

    Section 3.5:Command Line Version of Red Hat Update Agent Configuration Tool Figure 3–3 Package Exceptions Settings 3.5 Command Line Version of Red Hat Update Agent Configuration Tool The command line version of this tool performs the same function as the graphical version. It allows you to configure the settings used by the Red Hat Update Agent and store them in the configuration file /etc/sysconfig/rhn/up2date.
  • Page 32 Chapter 3:Red Hat Update Agent Configuration Tool networkRetries removeSkipList [’kernel*’] retrieveOnly enableProxy keepAfterInstall 10. proxyPassword 11. proxyUser 12. headerFetchCount 13. versionOverride 14. enableProxyAuth 15. noSSLServerURL http://www.rhns.redhat.com/XMLRPC 16. noReplaceConfig 17. noBootLoader 18. systemIdPath /etc/sysconfig/rhn/systemid 19. serverURL https://beta.rhns.redhat.com/XMLRPC 20. pkgSkipList [’kernel*’] 21. adminAddress [’root@localhost’] 22. forceInstall 23. fileSkipList 24.

  • Page 33: Chapter 4 Red Hat Update Agent

    Section 4.1:Starting the Red Hat Update Agent 4 Red Hat Update Agent After configuring the settings for the Red Hat Update Agent using the instructions in Chapter 3, Red Hat Update Agent Configuration Tool , you can use the Red Hat Update Agent to retrieve the latest software packages from Red Hat.
  • Page 34 Chapter 4:Red Hat Update Agent Argument Description -i, --install Install packages after they are downloaded. This argument will override the configuraton option Do not install packages after retrieval. -k, --packagedir Specify a colon separated path of directories to look for packages before trying to download them.

  • Page 35: Choosing A Channel

    Section 4.2:Choosing a Channel Figure 4–2 Welcome Screen 4.2 Choosing a Channel The first step is to select the channel(s) from which you want the updated packages to be retreived. Select one or more channels and click . Refer to Section 5.5, Channels and Packages for more Next information on channels and how channels are used to determine which packages to install.

  • Page 36: Choosing Packages To Update

    Chapter 4:Red Hat Update Agent Figure 4–3 Channels 4.3 Choosing Packages to Update After clicking on the Welcome Screen, the dialog box in Figure 4–4, Retrieve Update Information Next will appear. This means that a connection to Red Hat Network is being established and that your customized list of updates is being retreived.
  • Page 37 Section 4.3:Choosing Packages to Update for your system. If there are no updated packages available for your system, the dialog box in Figure 4–5, No new packages needed appears. Click to exit Red Hat Update Agent. Figure 4–5 No new packages needed If your system is not up-to-date, your customized list of available updated packages is displayed as shown in Figure 4–6, List of Available Updates.
  • Page 38 Chapter 4:Red Hat Update Agent If you want to view the advisory for the RPM Update, click the button. This will View Advisory display what type of Errata Alert it is and what problems it addresses as shown in Figure 4–7, View Advisory.

  • Page 39: Installing Updated Packages

    Section 4.4:Installing Updated Packages Red Hat Update Agent shows the progress of each package retrieval as shown in Figure 4–9, Re- trieval Finished. When they have all been retrieved, the message is displayed at the bottom All finished of the screen. Click to continue.

  • Page 40: Update Agent Finished

    Chapter 4:Red Hat Update Agent Figure 4–10 Installation Finished 4.5 Update Agent Finished When the Red Hat Update Agent has finished downloading the desired packages (and installing them if you chose the install option), you will see the screen in Figure 4–11, Update Agent Finished. to exit the Red Hat Update Agent.

  • Page 41: Command Line Version Of Red Hat Update Agent

    Section 4.6:Command Line Version of Red Hat Update Agent Figure 4–11 Update Agent Finished 4.6 Command Line Version of Red Hat Update Agent If you are not running X, you can still run the Red Hat Update Agent from a virtual console or remote terminal.
  • Page 42 Chapter 4:Red Hat Update Agent Table 4–2 Update Agent Command Line Arguments Argument Description --configure Configure Red Hat Update Agent options. This is equivalent to running the Red Hat Update Agent Configuration Tool (up2date-config). To run the command line version of up2date-config, use this option in conjunction with the --nox option: up2date --nox --configure.
  • Page 43 Section 4.6:Command Line Version of Red Hat Update Agent Argument Description --tmpdir=directory Override the configured package directory. The default location is /var/spool/up2date. This option is useful if you do not have enough space in the configured location. -u, --update Update the system. All package updates for your system will be downloaded based on your configured preferences (and installed if you chose that option).
  • Page 44 Cut and paste the following into a file and save it as redhat2.asc or download it from http://www.redhat.com/about/contact/. Type bits/keyID Date User ID 1024D/DB42A60E 1999-09-23 Red Hat Software, Inc. (security@redhat.com) 2048g/961630A2 1999-09-23 -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.0.0 (GNU/Linux) Comment: For info see http://www.gnupg.org...

  • Page 45: Manual Package Installation

    Section 4.7:Manual Package Installation XCLPA/9P/vtImA8CZN3jxGgtK5GGtDNJ/cMhhuv5tnfwFg4b/VGo2Jr8mhLUqoIb E6zeGAmZbUpdckDco8D5fiFmqTf5+++pCEpJLJkkzel/32N2w4qzPrcRMCiBURES PjCLd4Y5rPoU8E4kOHc/4BuHN903tiCsCPloCrWsQZ7UdxfQ5LQiUmVkIEhhdCwg SW5jIDxzZWN1cml0eUByZWRoYXQuY29tPohVBBMRAgAVBQI36lQ4AwsKAwMVAwID FgIBAheAAAoJECGRgM3bQqYOsBQAnRVtg7B25Hm11PHcpa8FpeddKiq2AJ9aO8sB XmLDmPOEFI75mpTrKYHF6rkCDQQ36lRyEAgAokgI2xJ+3bZsk8jRA8ORIX8DH05U lMH27qFYzLbT6npXwXYIOtVn0K2/iMDj+oEB1Aa2au4OnddYaLWp06v3d+XyS0t+ 5ab2ZfIQzdh7wCwxqRkzR+/H5TLYbMG+hvtTdylfqIX0WEfoOXMtWEGSVwyUsnM3 Jy3LOi48rQQSCKtCAUdV20FoIGWhwnb/gHU1BnmES6UdQujFBE6EANqPhp0coYoI hHJ2oIO8ujQItvvNaU88j/s/izQv5e7MXOgVSjKe/WX3s2JtB/tW7utpy12wh1J+ JsFdbLV/t8CozUTpJgx5mVA3RKlxjTA+On+1IEUWioB+iVfT7Ov/0kcAzwADBQf9 E4SKCWRand8K0XloMYgmipxMhJNnWDMLkokvbMNTUoNpSfRoQJ9EheXDxwMpTPwK ti/PYrrL2J11P2ed0x7zm8v3gLrY0cue1iSba+8glY+p31ZPOr5ogaJw7ZARgoS8 BwjyRymXQp+8Dete0TELKOL2/itDOPGHW07SsVWOR6cmX4VlRRcWB5KejaNvdrE5 4XFtOd04NMgWI63uqZc4zkRa+kwEZtmbz3tHSdRCCE+Y7YVP6IUf/w6YPQFQriWY FiA6fD10eB+BlIUqIw80VgjsBKmCwvKkn4jg8kibXgj4/TzQSx77uYokw1EqQ2wk OZoaEtcubsNMquuLCMWijYhGBBgRAgAGBQI36lRyAAoJECGRgM3bQqYOhyYAnj7h VDY/FJAGqmtZpwVp9IlitW5tAJ4xQApr/jNFZCTksnI+4O1765F7tA== =3AHZ -----END PGP PUBLIC KEY BLOCK----- At the shell prompt, import the key with the following command: gpg --import redhat2.asc The resulting message tells you that the key was processed.

  • Page 46: Synchronizing Your System Profile

    Chapter 4:Red Hat Update Agent 4.8 Synchronizing Your System Profile If you configured the Red Hat Update Agent to install the latest packages automatically, then your System Profile stored by Red Hat Network will be updated automatically also. However, if you only download the latest RPM packages using the Red Hat Update Agent or through the Web interface and upgrade or install the packages yourself, your System Profile will not be updated automatically.

  • Page 47: Chapter 5 Software Manager

    In a Web browser, go to http://rhn.redhat.com. The page shown in Figure 5–1, Logging into Red Hat Network will be displayed. If you have not registered a system yet or do not have a redhat.com account, create a new account by clicking under the category on the left navigation bar.

  • Page 48: Introduction To The Web Interface

    Chapter 5:Software Manager Figure 5–1 Logging into Red Hat Network 5.2 Introduction to the Web Interface The left navigation bar is divided into categories and pages within the categories. A user with entitled systems has permission to use the following categories and pages. Each will be explained in more detail throughout this manual.
  • Page 49 Section 5.2:Introduction to the Web Interface • — Manage your systems here. Systems – — View a list of all your systems along with how many Errata Alerts each system System List has, which channels the systems are subscribed to, and which systems are entitled. –...
  • Page 50 Chapter 5:Software Manager – — Link to RHN User Reference Guide that provides step-by-step in- RHN User Reference structions for using RHN. • — Detailed information about how Red Hat protects the information about Security and Privacy your systems and the personal information that you provide. •...

  • Page 51: Your Rhn

    Section 5.3:Your RHN Click the category name in the box. Current Selections Unselect the items from the list by clicking the checkbox under the column. Select Click After clicking , the number of selections in the category will change in the Cur- box.
  • Page 52 Update If you want to change your Red Hat Network password (the one used to log into Software Manager and redhat.com) click the tab on the page and replace the asterisks in the Details...

  • Page 53: Systems

    Section 5.4:Systems The email address on the tab is the one Red Hat Network sends email notification to if you Details have selected to receive Errata Alert email for your systems under the tab. To change Preferences your preferred email address, replace in on the page and click Details Update...
  • Page 54 Chapter 5:Software Manager 5.4.1 System List As shown in Figure 5–4, Systems List, the page displays a list of all your registered System List systems. Figure 5–4 Systems List contains several columns for each registered system: System List • — To select systems so that you can perform actions such as package installation on them, Select check the box beside each system that you want to select and click...
  • Page 55 Section 5.4:Systems • — The name of the system as configured when registering the system. The default name Name is the hostname of the system. Clicking on the name of a system takes you to the System Details page for the system. Refer to Section 5.4.4, System Details for more information. •...
  • Page 56 Chapter 5:Software Manager 5.4.4 System Details If you click on the name of a system on any page, it will display the System Details page for the system. The System Details page is further divided into tabbed pages. The first tabbed page you see is the page.

  • Page 57: Channels And Packages

    Section 5.5:Channels and Packages • — During registration, if you selected to include the Hardware Profile for this machine, Hardware this tabbed page displays the Hardware Profile. If the hardware profile looks incomplete or out- dated, click the button to schedule a Hardware Profile Update Schedule Hardware List Refresh for your system.
  • Page 58 Chapter 5:Software Manager Clicking on a package name displays a set of tabbed pages with information about the package. This information includes which architectures it runs on, the package size, build date, package dependen- cies, the change log, list of files in the package, and which systems have the package installed. Refer to Section 5.5.3, Package Details for more information.
  • Page 59 Section 5.5:Channels and Packages Click on the name of a channel to view its package list. Click on the name of the package that you want to install. Click on the tab. Target Systems Select the entitled systems that you want to install the package on. Click the Install Packages on Selected Systems button.

  • Page 60: Errata

    Chapter 5:Software Manager Figure 5–5 Package Download Even if you selected to download more than one package, you will only download one file. This one TAR file contains all the RPM packages you selected. To extract the packages from the TAR file, open a shell prompt (such as an XTerm or GNOME terminal), change to the rhn-packages directory, and issue the command: tar -xvf rhn-packages.tar...
  • Page 61 Section 5.6:Errata If you want to receive an email when Errata Alerts are issued for your system, go to => and select Systems System Preferences Receive Notifications of Updates 5.6.1 All Errata page displays a list of all Errata Alerts released. All Errata If you click on the synopsis of an Errata Alert, the Errata Details page for the Errata Alert will appear.

  • Page 62: Scheduled Actions

    Chapter 5:Software Manager To apply all applicable Errata Updates to a system, click on => on the left Systems System List navigation bar. Click on the name of an entitled system, and click the button Update This System on the tabbed page.
  • Page 63 Section 5.7:Scheduled Actions • are actions that have not started or are in progress. Pending Actions • are actions that have been completed. Completed Actions • are actions that you have selected to archive. Archived Actions In each tabbed page, each row in the list represents a single scheduled event or action that might affect multiple systems and involve multiple packages.
  • Page 64 Chapter 5:Software Manager Figure 5–6 Scheduled Actions...

  • Page 65: Chapter 6 Red Hat Network Daemon

    Red Hat Network Daemon 6 Red Hat Network Daemon The Red Hat Network Daemon periodically connects to the Red Hat Network to check for updates and notifications. The default interval time is two hours (120 minutes). This can be configured in the /etc/sysconfig/rhn/rhnsd file by specifying the time interval in minutes.
  • Page 66 Chapter 6:Red Hat Network Daemon...

  • Page 67: Using Red Hat Network With Red Hat Linux

    After they are installed, run the Red Hat Network Registration Client (rhn_register) to register your system. See Chapter 2, Red Hat Network Registration Client for details. Login to your account at http://rhn.redhat.com to configure your preferences and to configure which systems you want to subscribe to Software Manager.
  • Page 68 Chapter 7:Using Red Hat Network with Red Hat Linux 6.2...

  • Page 69: Chapter 8 Frequently Asked Questions

    $19.95/month for each system. Q: How do I purchase Software Manager subscriptions? A: Go to http://rhn.redhat.com/purchase_info.pxt for instructions. Q: Can I cancel my Red Hat Network Software Manager subscriptions? A: To cancel your subscriptions, contact Customer Service at (888) RedHat1.
  • Page 70 Red Hat Network servers. Use this command whenever you install, upgrade, or remove packages without using the Red Hat Update Agent. Q: I forgot my username and password. How do I access my account? A: Go to http://rhn.redhat.com, click on the link, and complete the form. Forgot your password? Your password will be sent to your email address.
  • Page 71 A: The system you are running it on is not connected to the Internet, or the system is attempting to access Red Hat Network through a proxy server. Proxy server settings can be configured in the newest version of up2date available at http://www.redhat.com/support/errata/RHBA-2000-138.html. For instructions on configuring the proxy server, refer to Section 3.2, General Settings.
  • Page 72 Chapter 8:Frequently Asked Questions...

  • Page 73: Glossary

    An Errata Alert that pertains to a bug fix. Bugzilla Bugzilla is an online application ( http://www.redhat.com/bugzilla) that allows users to com- municate directly with the developers. From Bugzilla, users can submit bug reports and feature requests for Red Hat Linux and related open source packages.
  • Page 74 Red Hat Linux. The information includes the topics of the Errata, Bugzilla bug IDs, relevant releases/architectures, solutions including required RPMs, and MD5 checksums for verification. Errata are also available at http://www.redhat.com/errata/. Each RHN Errata Alert is based on the Red Hat Linux Errata List.
  • Page 75 Frequently Asked Questions Errata Alert RHN Errata Alert that updated packages based on Red Hat Errata are available for one or more systems within an organization. There are three types of Errata Alerts: Security Alerts, Bug Fix Alerts, and Enhancement Alerts. Registered System A system that is registered with Red Hat Network.
  • Page 76 Chapter 8:Frequently Asked Questions Security Alert An Errata Alert that pertains to system security. Service Level A Red Hat Network subscription service. Different service levels offer different features of RHN. The first service level offered is Software Manager . Software Manager The name of the first Service Level offering for Red Hat Network.
  • Page 77 Index Index Getting started........ 11 GNU Privacy Guard ......11 base channel ........57 hardware profile ......... 57 Channel List Updating on server......57 channels........57 base.
  • Page 78 Index left navigation bar......48 logging in ........47 Quality Assurance ......10 overview ........48 Scheduled Actions ......62 Systems ........53 subscribe to channel ......58 Red Hat Linux 6.2 system Using Red Hat Network with ..

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