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Downloading & Installing Software

Downloading & Installing Software. Chapter 13. Maintaining the System. Yum Pirut BitTorrent Rpm Keeping Software Up To Date Up2date Red Hat Network Wget. Packages. A software package is a collection of scripts, programs, files, and directories required to run a software application.

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Downloading & Installing Software

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  1. Downloading & Installing Software Chapter 13

  2. Maintaining the System • Yum • Pirut • BitTorrent • 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 package 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/service 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. BitTorrent • 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/filename

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

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