The Linux keyboard shortcut Meta Page Down (PC) or fn control cursor down (Mac) will perform the Minimize action. Meta Page Down for Minimize Window is available in KDE and LXDE. You may have to swap fn key functionality to use this keyboard shorcut on a Mac. Minimize Window is a global Linux keyboard shortcut that is usually also accessible with a button located in the system title bar or in the contextual menu available by right-clicking the title bar. The same keyboard shortcuts may also be available with other desktop environments that can be run on Linux.