If the CD-ROM is not present, the system will request its insertion.ĭeselect this option if you do not plan to install packages from CD-ROM. If the option is selected, the system will attempt to search the CD-ROM during package installs. The option to install from CD-ROM may be selected or deselected from this window (in the section "Installable from CD-ROM/DVD"). Note: The fastest server now may not be the fastest server at another time. Once you select a server it remains the selected server until you change it. If you click "Select Best Server", Ubuntu will attempt (on this occasion only) to find the fastest server. If you have problems with your current server (for example, the server is slow or you cannot find a package you expect) then select another server by clicking the "Download from:" list. The fastest server for you will often be a server close geographically to you. The button does not return system files to the original installation settings.Ĭopies of the main repositories are available on different servers round the world. It merely cancels pending changes which have not been executed, returning the selections to their prior state. The 'Revert' button erases changes made since the last save. If you do not wish to use 'Reload', select 'Close' to exit without updating the database. Repository information will not normally be updated until the 'Reload' button is selected. Any time a setting is changed which alters a repository setting the 'Reload' button should be selected to allow the applicable repository database to be updated. If the action would change system files, they are written at this time. The 'Close' button must be selected to execute any change(s). The Close, Reload, and Revert buttons each perform special functions with regard to the repository pages.Ĭlose. A dialog box should appear, asking whether you'd like to update the list of repositories. To disable a repository temporarily, untick the checkbox next to its name. The four main repositories are:įor a detailed description of these repositories, see Repositories. The "Ubuntu Software" tab displays a list of repositories or "Channels". For further details please see Managing Repositories from the Command Line. If you wish to, you can modify this file directly. The operations described on this page modify the software repositories configuration file /etc/apt/sources.list. You can download a copy of a Canonical repository for your machine architecture (for example, i386) and use it offline (see AptGet/Offline/Repository). Note: You will have to enter your password to change settings in this window. Open the software center, then from the Edit menu select "Software Sources". One method is to go through the "Ubuntu Software Center". This interface can be accessed via several methods. GUI-based repository management is normally accomplished via "Software Sources". For Kubuntu please see Kubuntu repository management. This page describes how to manage software repositories in Ubuntu. If you have an internet connection you can install software from any Ubuntu repository. The Ubuntu Install CDs contain software from the "Main" and "Restricted" repositories, so if you have no internet connection you can still install software from the CDs. Multiverse - Software restricted by copyright or legal issues. Restricted - Proprietary drivers for devices. Universe - Community-maintained free and open-source software. Main - Canonical-supported free and open-source software. For details of Ubuntu's Free Software Philosophy please see here. Ubuntu distinguishes between software that is "free" and software that is not free. Repositories make it easy to install new software, while also providing a high level of security, since the software is thoroughly tested and built specifically for each version of Ubuntu. Many of these programs are stored in software archives commonly referred to as repositories. There are literally thousands of Ubuntu programs available to meet the needs of Ubuntu users. Integration with Ubuntu Software Center.Adding Personal Package Archives (PPAs).Enabling Canonical Partner Repositories.
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