Screenfetch is a free, open-source command-line application designed to showcase your system's information and details. It is used to generate a text based logo in the terminal with information about the system such as the operating system, version, kernel, uptime, packages, shell, resolution, DE, WM, WM Theme, GTK Theme, icon theme, font, CPU, RAM, and other information. The logo can be customized to fit the user's needs and preferences. Screenfetch also allows users to generate screenshots of the terminal and upload them to various image hosting websites.
Both provide a simple one-page list of specifications and are easy to use.