Today we have hundreds of distributions out available. Ubuntu, Fedora, openSUSE, Debian and many more. Many of them are based of each other. Ubuntu for instance is based on Debian, while OpenSUSE is based on Fedora. Despite the fact that they are all under the name of "Linux", most of these Operating Systems are leading their own development. Ubuntu, for instance, cannot use most of Debians .deb files anymore. Each of these distributions strive on their own to create and incorporate new OS level features such as networking, bluetooth, and other factors. However, all Linux distributions are based on the same Linux kernel. Unless they create their own kernel, or heavily modify the Linux kernel, they are all essentially the same Operating System.
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