|
|
16.
|
|
|
In this section you can learn how to use a package manager to add or remove applications in Ubuntu with a few clicks. You can also learn about more advanced techniques of managing applications and discover some optional applications which you can add to Ubuntu.
|
|
|
|
|
(no translation yet)
|
|
|
|
|
18.
|
|
|
A package manager is a program that installs and uninstalls software, and keeps track of all the components each piece of software needs.
|
|
|
|
|
(no translation yet)
|
|
|
|
|
29.
|
|
|
To organise the software, Ubuntu repositories are categorised into four groups: <emphasis>Main</emphasis>, <emphasis>Restricted</emphasis>, <emphasis>Universe</emphasis>, and <emphasis>Multiverse</emphasis>. The rationale used to determine which software goes into which category is based on the level of support that software development teams provide for a program and the level of compliance the program has to the <ulink url="http://www.ubuntu.com/ubuntu/philosophy">Free Software Philosophy</ulink>.
|
|
|
|
|
(no translation yet)
|
|
|
|
Located in
add-applications/C/add-applications.xml:111(para)
|
|
|
37.
|
|
|
Open <menuchoice><guimenu>System</guimenu><guimenuitem>Administration</guimenuitem><guimenuitem>Software Sources</guimenuitem></menuchoice> and press <guilabel>Third Party Software</guilabel>.
|
|
|
|
|
(no translation yet)
|
|
|
|
Located in
add-applications/C/add-applications.xml:164(para)
|
|
|
39.
|
|
|
Enter the <guilabel>APT line</guilabel> for the extra repository. This should be available from the website of the repository or similar, and should look similar to the following:
|
|
|
|
|
(no translation yet)
|
|
|
|
Located in
add-applications/C/add-applications.xml:175(para)
|
|
|
42.
|
|
|
You will be notified that the information about available software is out-of-date. Press <guibutton>Reload</guibutton>.
|
|
|
|
|
(no translation yet)
|
|
|
|
Located in
add-applications/C/add-applications.xml:188(para)
|
|
|
43.
|
|
|
Most software repositories use a GPG key to digitally sign the files they provide, which makes it easy to check that the files have not 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.
|
|
|
|
|
(no translation yet)
|
|
|
|
Located in
add-applications/C/add-applications.xml:194(para)
|
|
|
44.
|
|
|
Once you have downloaded the GPG key, import the key by selecting the <guilabel>Authentication</guilabel> tab, clicking on <guibutton>Import Key File</guibutton>, and then selecting the GPG key to be imported.
|
|
|
|
|
(no translation yet)
|
|
|
|
Located in
add-applications/C/add-applications.xml:204(para)
|
|
|
46.
|
|
|
With the <guimenuitem>Add/Remove</guimenuitem> item in the <guimenu>Applications</guimenu> menu, you can install programs to do new things with Ubuntu. You can also remove programs you do not want. You need administrative access to use <application>Add/Remove Applications</application> (see <ulink type="help" url="ghelp:administrative">Administrative Tasks</ulink> for more details).
|
|
|
|
|
(no translation yet)
|
|
|
|
|
48.
|
|
|
Programs that are already installed have a check mark next to their name. Uncheck a program if you want to remove it from your computer.
|
|
|
|
|
(no translation yet)
|
|
|
|
Located in
add-applications/C/add-applications.xml:283(para)
|
