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How do I get to Universe Repository of Ubuntu software as mentioned in Ubuntu 12.04 LTS? I am installing 12.04 Ubuntu. Please help.

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Do you want to enable the universe and multiverse repositories in Ubuntu? –  Mitch Jun 9 '12 at 16:57

4 Answers 4

Command Line Way of enabling Ubuntu software Repositories For 12.10 and above:

To enable main repository,

sudo add-apt-repository main

To enable universe repository,

sudo add-apt-repository universe

To enable multiverse repository,

sudo add-apt-repository multiverse

To enable restricted repository,

sudo add-apt-repository restricted

NOTE:

After enabling the repositories, don't forget to update it.Run the below command to update the repositories,

sudo apt-get update
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If you want in one command and not use Software source ticking then in terminal put

sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu $(lsb_release -sc) universe"

To enable all ubuntu software (main universe restricted multiverse) repositories use

sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu $(lsb_release -sc) main universe restricted multiverse"

you can add also partner repository with different link (see difference is ubuntu to canonical)

sudo add-apt-repository "deb http://archive.canonical.com/ubuntu $(lsb_release -sc) partner"

Then update the package list:

sudo apt-get update

p.s.

$(lsb_release -sc) makes checking your Ubuntu version and putting its name in link. Since 12.04 is called precise then you can test in terminal lsb_release -sc gives word precise Thats makes added repository link precise name of your ubuntu Release in Software sources. Wrong word and noting will work.

for all differences in repositories read https://help.ubuntu.com/community/Repositories/Ubuntu

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Just a note that you may have to run sudo apt-get update before you can install the package you wanted. –  ty01 Nov 21 '13 at 19:17

First, open software center. Click on 'edit' and then 'software sources' to open the software sources window. Once that is open, check the box that says, "Community-maintained free and open-source software (universe)."

enter image description here

Now, all the universe packages should show up in software center just like all the other ones.

More information:

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Open dash and type Software sources

type <code>software sources</code> in Dash

then open software sources and click on the the universe repository .

select "Community maintained Open Source Software (universe)"

Close and reload cache

reload cache

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