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Chapter 18. Managing software

18.1. Using PackageKit
18.1.1. Installing software in GNOME
18.1.2. Removing software in GNOME
18.2. Using the command line interface
18.2.1. Installing software
18.2.2. Removing software
18.3. Advanced Yum
18.3.1. Installing new software with Yum
18.3.2. Updating software with Yum
18.3.3. Removing software with Yum

18.1. Using PackageKit

Fedora 14 uses a program called PackageKit to assist the user with installing and removing software. Any application from the Fedora repositories, including the ones described in this user guide, can be installed with the following method.
To start PackageKit in the GNOME environment, click System Administration Add/Remove Software. This will open the Add/Remove Software application. Use the command gk-application to start the graphical application from the command line. Details for installing and removing software with the Add/Remove Software application can be found below.
To start PackageKit in the KDE environment, click KMenuApplicationsSystemSoftware Management. This starts the kpackagekit application. The KDE Software Management browse section works similar to a file browser and contains descriptions of the applications. The application uses install and remove buttons and there is a Help icon in the bottom left corner if you need additional assistance.

18.1.1. Installing software in GNOME

Here is how to install software using Add/Remove Software in the GNOME desktop environment.
In the Search Box with the magnifying glass icon, type the name of the application you wish to install. If you are unsure of the specific application you need to install, you can also type keywords in this box, just like you would for an internet search engine.
Next, click the Find button – The message Querying appears in the lower left corner breifly and then zero or more listings will appear that match your search query.
Tick the box next to the description of the application or applications you wish to install. The message Downloading repository information appears in the lower left corner. The window area below the list of packages contains additional information about the selected software.
Select any additional packages to install or remove at this time by changing tick boxes next to the package name.
Finally, click the Apply button. This starts the installation process and concurrently installs or removes any additional packages where you modified the tick box. Follow any prompts to install additional packages.
Unless an error is displayed, the application is now installed (or removed) on your computer.

18.1.2. Removing software in GNOME

To remove software using PackageKit, you should follow the standard installation procedure, but untick boxes beside the programs you wish to uninstall instead of ticking boxes to install new programs.
Click System Administration Add/Remove Software. This will open the Add/Remove Software application.
In the Search Box with the magnifying glass icon, type the name of the application you wish to remove. If you are unsure of the specific application you need to remove, you can also type keywords in this box, just like you would for an internet search engine.
Next, click the Find button. The message Querying appears in the lower left corner briefly then zero or more listings will appear that match your search query.
Untick the box next to the description of the application or applications you wish to remove.

Software Installed Outside of PackageKit

If the box is already unticked, then the program is probably not already installed. If you are sure that you have selected the right application, but it still appears to not be installed, then it may have been installed using a method other than PackageKit. If, for example, the program was compiled and installed from source, then it may not register as installed in PackageKit. If this is the case, you will need to find an alternate method of removing it. If it was installed from source, you may find more information in the source distribution's Readme file.
The message Downloading repository information appears in the lower left corner. The window area below the list of packages contains additional information about the selected software.
Select any additional packages to install or remove at this time by changing tick boxes next to the package name.
Finally, click the Apply button. This starts the removal process and concurrently installs or removes any additional packages where you modified the tick box. Follow any prompts to remove additional packages, such as dependencies that only your newly uninstalled program relied upon.
Unless an error is displayed, the application is now removed from your computer.