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8.3. Advanced APT Configuration and Usage
Now it is time to dive into some more advanced topics. First, we will take a look at advanced configuration of APT, which will allow you to set more permanent options that will apply to APT tools. We will then show how package priorities can be manipulated, which opens the door for advanced fine-tuned, customized updates and upgrades. We will also show how to handle multiple distributions so that you can start experimenting with packages coming from other distributions. Next, we will take a look at how to track automatically installed packages, a capability that enables you to manage packages that are installed through dependencies. We will also explain how multi- arch support opens the door for running packages built for various hardware architectures. Last
but not least, we will discuss the cryptographic protocols and utilities in place that will let you validate each package’s authenticity.