Ubuntu Linux Tutorials

This tutorial explains how to update Ubuntu Linux after installation from repositories with Ubuntu Software Center and apt-get command.

Open software center.

ubuntu open software center

From edit click on software source

ubuntu edit software source

Under Ubuntu Software tab, enable all the repositories except source code and click on download from

ubuntu software source ubuntu software default

Select other from download drop down

ubuntu software source ubuntu software download from

Now click on select best server

ubuntu software source ubuntu software best server

You need to authenticate this with super user password. Super user account is the user account which we create during the installation.

ubuntu software source ubuntu software auth

Ubuntu will perform several testing to select best server for your location.

ubuntu software source ubuntu software download testing

Once Ubuntu select best server for you click on chose server

ubuntu software source ubuntu software chose server

Now click on other software tab. whenever you install any software via PPA it makes its entry here in this list.

PPAs (Personal Package Archive) are repositories. You can use PPAs to install or upgrade packages that are not available in the official Ubuntu repositories. One of the most common causes of unmet dependencies is PPAs, especially when used to upgrade the existing package in Ubuntu repositories. To solve the problem you have three options, disable, purge (revert back to original package in Ubuntu repositories) or remove PPA. All these options are available here.

If it is a fresh installation you will get only four options here. Enable canonical partners. And click on close.

ubuntu software source other software

That all setting we need to in software center.

Now press ALT + CTRL+T key combination to open the terminal and run following command

 sudo apt-get clean

This command would clears out the local repository of retrieved package files (the .deb files). It removes everything but the lock file from /var/cache/apt/archives/ and /var/cache/apt/archives/partial/. This is very helpful especially when you are facing unmet dependency errors.

Now run following command.

sudo apt-get -f install

The -f here stands for "fix broken". Apt will attempt to correct broken dependencies. If you manually installed a package that had unmet dependencies, apt-get will install those dependencies, if possible, otherwise it may simply remove the package that you installed in order to resolve the problem.

ubuntu clean install command

Now run following command

sudo apt-get update

This command would update the repository. Any change which you have made in software source from Ubuntu software center will also take place.

Now run following command

sudo apt-get upgrade

This command would update the Ubuntu. This will ensure that you will get the latest Ubuntu. On a fresh installation it is going to take a lot of times. During the upgrading process you need to confirm several actions.

ubuntu update and upgrade comand

After upgrading reboot the system.

After reboot you have latest Ubuntu. Check our other articles to explore Ubuntu.