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A QWERTY keyboard layout with the position of Control, Alt and Delete keys highlighted. Control-Alt-Delete (often abbreviated to Ctrl+Alt+Del and sometimes called the "three-finger salute" or "Security Keys") [1] [2] is a computer keyboard command on IBM PC compatible computers, invoked by pressing the Delete key while holding the Control and Alt keys: Ctrl+Alt+Delete.
The Command key (sometimes abbreviated as Cmd key ), ⌘, formerly also known as the Apple key or open Apple key, is a modifier key present on Apple keyboards. The Command key's purpose is to allow the user to enter keyboard commands in applications and in the system. An "extended" Macintosh keyboard—the most common type—has two command ...
The classic Macintosh startup sequence includes hardware tests which may trigger the startup chimes, Happy Mac, Sad Mac, and Chimes of Death.. All Macs made from 2016 to 2020 have the startup chimes disabled by default, [1] however it was later re-enabled on those Macs running macOS Big Sur or later; this can be disabled by the user within System Preferences (Big Sur up to Monterey) or System ...
As a terminal emulator, the application provides text-based access to the operating system, in contrast to the mostly graphical nature of the user experience of macOS, by providing a command-line interface to the operating system when used in conjunction with a Unix shell, such as zsh (the default interactive shell since macOS Catalina [3]). [4]
A storage drive or partition connected directly to the computer, either internally or by a bus like USB or Thunderbolt and formatted as APFS or journaled HFS+. If the volume format is not correct, Time Machine will prompt the user to reformat it. A folder on another Mac on the same network. A drive shared by an Apple Time Capsule on the same ...
Command-line interface. A command-line interface ( CLI) is a means of interacting with a computer program by inputting lines of text called command-lines. Command-line interfaces emerged in the mid-1960s, on computer terminals, as an interactive and more user-friendly alternative to the non-interactive interface available with punched cards ...
[164] "Two major recommendations came out of Nifty Nugget: a direct line of command between the transportation agencies and the Joint Chiefs of Staff; and the creation of an agency responsible for deployments. [165] This agency was to be established as the Joint Deployment Agency, a forerunner to United States Transportation Command.
Comparison of command shells. Further information: Shell (computing) Bash, the default shell on many GNU/Linux systems. A command shell is a command-line interface to interact with and manipulate a computer's operating system .