How to use apt-get in ubuntu
Posted on November 19, 2008
Apt-get is the command-line tool for handling packages in ubuntu.You can use apt-get to install packages,upgrade packages,remove packages,even to upgrade your ubuntu to a new version.
In fact most of these action will interact with the repositories.Repositories are merely collections of softwares which are stored in a public location on the internet. By including the web address of these repositories, you are directing apt-get to search these locations for the desired software. You use the /etc/apt/sources.list file to list the addresses of the repositories. It takes the following format:
deb [web address] [distribution name][maincontribnon-free]
And below is an example of mine.
deb http://mirror.lupaworld.com/ubuntu/archive/ intrepid main restricted
There are hundreds of repository update servers for ubunt users.So I suggest you to choose a best or fastest update server.
Below will give you some examples of how to use apt-get.
To sync the local software database with the database on the repositories. This will cache a copy of the list of all the remotely available softwares to your machine. This is achieved by running the following command:
sudo apt-get update
After sync all repositories to local database,you can search a specific software from the local database to know if it’s available:
sudo apt-cache search kolourpaint
Once you have figured that the package (in our case baseutils) is available, then installing it is as simple as running the following command:
sudo apt-get install kolourpaint
And removing a package is as simple as running the command:
sudo apt-get remove kolourpaint
To upgrade a software to the new version ,just run the following command:
sudo apt-get update kolourpaint
And if you want to upgrade your ubuntu to new version,you just need to run:
sudo apt-get dist-upgrade
tips:To upgrade you ubuntu,you can also refer upgrade your ubuntu
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