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24.
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Enter the <emphasis>APT line</emphasis> for the extra repository. This should be available from the website of the repository or similar, and should look similar to the following:
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(no translation yet)
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Located in
add-applications/C/add-applications.xml:61(para)
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27.
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Most software repositories use a GPG key to digitally sign the files they provide, which makes it easy to check that the files haven't been tampered with since their creation. In order for apt to be able to check this, you need the public key that corresponds to the signatures. The key should be available for download on the repository's website.
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(no translation yet)
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Located in
add-applications/C/add-applications.xml:66(para)
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28.
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Once you have downloaded the GPG key, import the key by selecting the Authenticate tab, and clicking on <emphasis>Import Key File...</emphasis>, and then selecting the GPG key to be imported.
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(no translation yet)
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Located in
add-applications/C/add-applications.xml:68(para)
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47.
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If you are comfortable using the Terminal, you can use <application>apt</application> (Advanced Packaging Tool) to install or remove software. You need administrative access to use <application>apt</application>. See <link linkend="root-and-sudo">Administrative Tasks</link> for more details.
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(no translation yet)
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Located in
add-applications/C/add-applications.xml:99(para)
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48.
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To update the local list of packages, enter in a Terminal: <screen>sudo apt-get update</screen> Note that this command only updates the package <emphasis>information</emphasis> on your system. It does not install or update the actual software packages.
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(no translation yet)
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Located in
add-applications/C/add-applications.xml:100(para)
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49.
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To install all available updates for currently installed software: <screen>sudo apt-get upgrade</screen>
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(no translation yet)
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Located in
add-applications/C/add-applications.xml:103(para)
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56.
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The preferred method of installing programs is via the package managers described in this chapter. However, although the Xubuntu package archives are very large, it is possible that you may wish to install a package that is not available in the Ubuntu archives. If this happens, you can also download and install files from websites.
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(no translation yet)
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Located in
add-applications/C/add-applications.xml:128(para)
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58.
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There are many different kinds of Linux package files. Most of these are associated with the package managers of specific Linux distributions. Examples are <emphasis>Debian Package</emphasis> files (<emphasis>.deb</emphasis> files), <emphasis>RPM Package Manager</emphasis> files (<emphasis>.rpm</emphasis> files), and <emphasis>Tarballs</emphasis> (<emphasis>.tar</emphasis> files).
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(no translation yet)
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Located in
add-applications/C/add-applications.xml:130(para)
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