Every Linux command has one or more options and flags to perform different operations. One of the useful and important option allow us to simulate Linux commands but do not actually change the system. For instance, we can simulate the process of installation or removal of a package or program, but without actually installing or removing the intended package from a Linux system.
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APT Listing Packages – Ubuntu / Debian
Do you ever wonder how many thousands of packages are installed on your Linux system? Even a fairly modest Linux system is likely to have well over a thousand packages installed. And there are many ways to get details on what they are. Here are some of the most useful commands for gaining insights into the packages installed on your Linux system using APT on Ubuntu / Debian systems.