1. Downloading & Installing Software Chapter 13

2. Maintaining the System Yum Pirut BitTiorrent Rpm Keeping Software Up To Date Up2date Red Hat Network Wget

3. Packages A software package is a collection of scripts, programs, files, and directories required to run a software application. Software from your system can come in different packages –Rpm –Tar –GNU Config & Build System

4. yum Early releases of Red hat did not have a tool for managing updates Yellow Dog Updater, Modified (yum) is now included with Fedora Yum works with “rpm” packages

5. Repositories The yum utility downloads pakage headers and packages from servers called repositories. Fedora provides the initial repositories (repos). These are quickly mirrored around the world. Yum is configured to use these mirrors.

6. Configuring yum By default yum is configured to access the global mirrors and install updates as requested. There is no configuration needed unless you want to modify the repo that you are using (use an in- house mirror)

7. Using yum to update, install and remove packages Logged in as “root” you can run yum from the command line –“Yum update” –See p.478-9 for an example of the output

8. Installing with yum New packages can be installed with yum –Yum install package_name In addition to working with individual packages you work with groups. If you are unsure of the groups you can use: –Yum grouplist

9. Installing with yum Unsure of a groups contends? –Yum groupinfo groupname

10. Other yum commands Check-update –Lists packages installed and list updates available List available –list all packages that can be installed from the yum repositories Search word –Searches for a word in the package description, summary, packager, and name

11. Automatic updates The yum service can be set to run nightly: –/sbin/servcie yum start –This will set the service To verify: –/sbin/chkconfig yum on

12. Pirut:add and remove GUI Package Install and Removal Utility KDE: System – Add/Remove Software GNOME – Applications – Add/Remove

13. BitTorrrent Hybrid Server / Client and P2P Efficiently distributes large amounts of static data – Fedora ISOs Requirements –BT client software curses –Firewall permission to pass.torrent –Bandwidth Wizard brings back Klaw!

14. BitTorrent-curses Textual BT client –Downloading a slackware ISO

15. rpm A utility and a package format Red Hat Package Manager (rpm) works only with packages tht have been built for processing by rpm It install, uninstalls, upgrades, queries, and verifies rpm packages

16. rpm Rpm can be used to install a new kernel –We cover this in ch.15

17. Keeping Software Up to Date Reasons to keep current –Security –Bug Fixes –Feature enhancement

18. Up2date The up2date utility utilizes the Red hat Network (RHN) Alert Notification Tool. When updates are available they are indicated by a pop up or light on the panel Up2date uses the similar approach as yum with repositories

19. Up2date GUI Up2date-config

20. RHN Alert Notification Tool Main Panel indictors: –Blue with a check mark All is well –Red with an exclamation mark Updates available –Green with ½ arrows System is downloading –Gray with question mark Indicates an error

21. wget Wget –utility is a noninteractive command line utility that can retrieve files from the web –Wget http://www.redhat.com/filenamehttp://www.redhat.com/filename

22. Summary Yum Pirut BitTiorrent Rpm Keeping Software Up To Date Up2date Red Hat Network Wget