CtrlQ

CtrlQ refers to the keyboard shortcut formed by holding the Control key and pressing Q. It is widely used as a quick command to quit or exit an application, but the exact behavior depends on the software and platform. In many Windows and Linux desktop applications, Ctrl+Q is a common quit shortcut. On macOS, the standard quit command is Command+Q, and Ctrl+Q may be bound to a different action or offered for cross-platform consistency.

In terminal and console contexts, Ctrl+Q has a different meaning: it is the XON control character used to resume output after a pause caused by Ctrl+S (XOFF) flow control. This historical role is still relevant in some command-line interfaces and serial connections.

In software development frameworks, keyboard shortcuts are often standardized to align with platform conventions. For example, Qt defines a Quit shortcut as Ctrl+Q on Windows and Linux, and as Command+Q on macOS, enabling cross-platform consistency for applications built with Qt.

Variations exist in individual applications. Some editors, IDEs, or web applications remap Ctrl+Q to perform actions other than quitting, such as closing a tab, triggering a search, or being disabled for conflict avoidance. Accessibility considerations may also lead to alternative bindings or the removal of this shortcut.

Overall, Ctrl+Q is a familiar, though not universal, quit-oriented binding in modern software, with its exact function determined by the host program and operating system.