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6.4. Package Managers
One of the biggest differences between Ubuntu and other operating systems is how you install and uninstall applications. In Microsoft Windows, most applications provide their own installation and removal methods. Some applications provide a method to keep themselves up to date, but others do not and there is no easy way to ensure that everything on your computer is up to date. Keeping track of all the programmes that have been installed and keeping all those programmes updated is largely up to you.
Ubuntu has a sophisticated package management framework that keeps track of all the software installed, automates the process of installing and removing applications, and ensures that all the software is kept up to date with the latest enhancements and fixes. All you have to do is decide what applications you want installed, and then use a package manager to tell Ubuntu to install them.