How to add Ubuntu software source

ArticleDirectory

• Default software source
• Change software source
• Change Internet update attributes
• Add software source by yourself

Ubuntu software source We believe that the online update Design of Ubuntu is very convenient because it can improve the system installation speed, it also saves a lot of time for downloading and installing CD/DVD. (currently, multiple CD or DVDs are required for Linux distributions. for users with insufficient Internet bandwidth, this will often cause download difficulties ). I wonder if you have thought about where the software is stored? Can I specify the download location? To solve this problem, you must mention the software repositories used by ubuntu ). In ubuntu, the so-called "software source" refers to the software database placed on many servers in the world. Currently, there are about different software packages in the software source. Because the software source is open to all Ubuntu users for updates, you only need to regularly upload the latest version of the software in the software source to ensure that all users use the latest released software package. Default software source During Ubuntu installation, the system specifies the default software source based on the selected time zone to speed up downloading updates. For example, during installation, if the selected time zone is Shanghai, the system will specify the Chinese Ubuntu software source. If you want to know the list of software sources currently used by the system, you must first open the/etc/APT/sources. list file. The following example shows my current computer settings, which lists the software source URLs for different purposes: # Major bug fix updates produced after the final release of # Distribution. Deb http://cn.archive.ubuntu.com/ubuntu/ edgy-Updates main restricted multiverse universe Deb-Src http://cn.archive.ubuntu.com/ubuntu/ edgy-Updates main restricted multiverse universe # added by software-Properties # Uncomment the following two lines to add software from the 'Universe' # Repository. # N. B. software from this repository is entirely unsupported by the Ubuntu # Team, and may not be under a free licence. please satisfy yourself as # Your rights to use the software. Also, please note that software in # Universe will not receive any review or updates from the Ubuntu Security # Team. # Deb http://cn.archive.ubuntu.com/ubuntu/ edgy universe # Deb-Src http://cn.archive.ubuntu.com/ubuntu/ edgy universe # Uncomment the following two lines to add software from the 'backports' # Repository. # N. B. software from this repository may not have been tested # Extensively as that contained in the main release, although it except des # Newer versions of some applications which may provide useful features. # Also, please note that software in backports will not receive any review # Or updates from the Ubuntu security team. # Deb http://cn.archive.ubuntu.com/ubuntu/ edgy-backports main restricted universe multiverse # Deb-Src http://cn.archive.ubuntu.com/ubuntu/ edgy-backports main restricted universe multiverse Deb http://security.ubuntu.com/ubuntu edgy-security main restricted multiverse universe Deb-Src http://security.ubuntu.com/ubuntu edgy-security main restricted multiverse universe # added by software-Properties # Deb http://security.ubuntu.com/ubuntu edgy-security universe # Deb-Src http://security.ubuntu.com/ubuntu (edgy-security universe) Deb http://archive.canonical.com/ubuntu dapper-inclucial main Http://archive.ubuntu.org.cn/ubuntu-cn dapper main universe multiverse restricted Http://ubuntu.cn99.com/ubuntu-cn/ dapper main restricted universe multiverse Deb http://archive.ubuntu.com/ubuntu/ edgy-Proposed universe main multiverse restricted Deb-Src http://archive.ubuntu.com/ubuntu/ edgy- proposed universe main multiverse restricted Deb http://archive.ubuntu.com/ubuntu/ edgy-backports universe main multiverse restricted Deb-Src http://archive.ubuntu.com/ubuntu/ edgy-backports universe main multiverse restricted Deb http://static.audacious-media-player.org/ubuntu dapper main The Deb-Src http://static.audacious-media-player.org/ubuntu dapper main Change software source However, if you still try to connect to the default software source when you encounter certain unexpected situations, such as an international cable disconnection caused by an earthquake, or traveling abroad, software Update may fail. Therefore, you need to change the location of the software source based on the actual situation. Of course, you can directly edit/etc/APT/sources. list file content. However, to avoid incorrect syntax and incorrect software source address, we recommend that you use the software source settings in the graphic interface.Program-- Synaptic. To open the synaptic program, click the system/System Management/New Software Package Manager option. After you enter the password, the system opens the new software package manager window, as shown in Figure 3-8. Then, at the top of the new software package manager window that appears, click the "set"/"software library" option. The system opens the "software source" window, as shown in 3-9. Figure 3-8 "New Software Package Manager" Window Figure 3-9 "software source" Window In the image shown in Figure 3-9, you can select the software source location from the "Download from" drop-down list, or you can determine the software package type included in the update. The following types of software packages are available: Universe: no open-source software officially maintained Main: Open-Source Software officially maintained Mulitverse: unofficial Open-Source Software (copyrighted or restricted) Restricted: officially maintained non-open source software Source code: source code Change Internet update attributes If you want to change the attributes and frequency of Internet update software packages, click the "Internet update" tab above and select the appropriate options as needed, as shown in 3-10. Figure 3-10 click the "Internet update" tab Add software source by yourself To increase the number of software sources, you can also manually add them. Click the "third-party" tab in the upper-left corner, and then click the "add" button in the lower-left corner. The system displays an Information Window and requires you to enter the software source location, as shown in Figure 3-11. Figure 3-11 Add a software source You must use the "type location package type" syntax when entering the package. Below are examples provided in this book for your reference: Deb http://hk.archive.ubuntu.com/ubuntu main