three-finger salute
Syn. Vulcan nerve pinch.
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In computing, the three-finger salute is a jocular term for the keyboard combination that forces a soft reboot, brings up the process manager (on Windows, BeOS or Mac OS X, and KDE-based Linuxes) or a jump to ROM monitor. These keys are sometimes referred to in computer manuals as interrupt keys, since they are often used to interrupt the operation of a malfunctioning program. The "three-finger salute" is named after the one- and two-finger salutes, euphemistic names for rude hand gestures. Other humorous synonyms include the "Vulcan nerve pinch" or "Romulan death grip" from the original Star Trek TV series.
Article originally based on Three-finger salute at FOLDOC, used with permission.
| Platform | Key combo | Function |
|---|---|---|
| Acorn Machines (pre-1987) | Break | Processor reset, although confusingly always referred to as soft reset. Hold down Ctrl as well for so-called hard reset (reinitializes various settings); hold down Shift to boot from disk (or not to, if disk is the default). |
| Acorn and post-Acorn RISC OS machines. | Reset button | Processor reset, although confusingly always referred to as soft reset. Hold down Ctrl as well for so-called hard reset (reinitializes various settings); hold down Shift to boot from disk (or not to, if disk is the default). Hold down various other keys to restore CMOS settings to safe configurations. |
| Ctrl + Break | Perform a soft reboot. | |
| Amiga | Ctrl + Left Amiga (or Commodore) + Right Amiga | Reboot the machine |
| Amstrad CPC 464 and CPC6128 | Ctrl + Shift + Esc | Reset (cold) |
| Amstrad PCW | Shift + Extra + Exit | Reset (cold) |
| IBM PC under DOS | Ctrl + Alt + Del | Perform a soft reboot |
| IBM PC under Windows 3.x shell | Ctrl + Alt + Del | Close unresponsive applications or (if pressed twice) perform a soft reboot |
| IBM PC under Microsoft Windows (95, 98, and Me) | Ctrl + Alt + Del | Bring up simplistic task manager (actually "Close Program" dialog) or (if pressed twice) perform a soft reboot |
| IBM PC under Windows NT-based OS (NT, 2000, XP, 2003 and Vista) | Ctrl + Shift + Esc | Bring up the Windows Task Manager |
| Ctrl + Alt + Del | Also known as the Secure Attention Sequence; bring up the logins screen (when pressed in login screen), or the "Windows security" dialog or (configurable on Windows 2000 and later) the Windows Task Manager (when logged in) | |
| IBM PC under OS/2 | Ctrl + Esc | Bring up the Window List (unblocking the synchronous input queue) |
| Ctrl + Alt + Del | Perform a soft reboot | |
| Ctrl + Alt + NumLock (twice) | Halt the system and begin a system dump to floppy disk | |
| IBM PC under Linux | Ctrl + Alt + Del | Signal the init process (usually configured to soft reboot) |
| Alt + SysRq + function key | Depending on the function key, performs a certain low-level function. Examples: sync (flush caches), reboot (forced soft reboot), unmount (remount filesystems readonly), etc... | |
| IBM PC under other OS | Ctrl + Alt + Del | Often (but not always) configured to reboot |
| Sinclair ZX Spectrum | Break | Halted peripheral (cassette tape or printer) operations with the report D BREAK - CONT repeats, or halted BASIC programs with the report L BREAK into program. |
| Sun workstation | L1/Stop + A | Enter ROM monitor |
| Sun workstation (serial console) | Break | Enter ROM monitor |
| Alphas running OpenVMS | Ctrl + P | Enter ROM Serial Console or reboot, depending on setting in SRM |
| Apple II family machines | Ctrl + Reset | Enter the monitor or ROM BASIC |
| Ctrl + Open Apple + Reset | Reboot the machine | |
| Ctrl + Option (Closed Apple) + Reset | Enter BIOS setup, then reboot | |
| Ctrl + Option (Closed Apple) + Open Apple + Reset | Self-test, then reboot | |
| Ctrl + Open Apple + Escape | (Apple IIGs) Enter the control panel | |
| Apple Macintosh computers with power button on keyboard | Command + Power | Enter debugger |
| Control + Command + Power (sometimes known as a "Control Flower Power") | Reboot the machine | |
| Mac OS (7 and later) | Command + Option + Esc | Force quit applications |
| SGI workstation | Left Shift + Left Ctrl + Left Alt + Keypad Divide + F12 | Restart X server (same as Ctrl + Alt + Backspace below) |
| Commodore 64/128 | Run/Stop + Restore | Halt (soft reconfiguration) and return to READY prompt |
| X Window System | Ctrl + Alt + Backspace | Restarts windowing system, logging the user out if using an X display manager, kills X otherwise |
| TI-80, TI-81, TI-82, TI-83, TI-84 | Mode, Alpha, S | Shows ROM version number. [Enter] enters self test mode |
| TI-85, TI-86 | 2nd, Mode, Alpha, S | Shows ROM version number. [Enter] enters self test mode |
| TI-89 | 2nd + Left Arrow + Right Arrow + On | Restarts the calculator and clears RAM
Esc + On Force Break without restarting RAM |
| Voyage 200 | 2nd + Hand + On | Restarts the calculator and clears RAM |
| HP-48 | On + C | Restarts RPL, clearing the Stack and PICT, closing IO, and returning to the HOME directory (but not purging the memory) |
| On + A + F | As above, but also purges the memory | |
| BeOS | Ctrl-Alt-Shift and click an applications entry in the Deskbar | Kills application |
| Zenith IBM-PC clones | Ctrl-Alt-Ins | Brings up hardware configuration menu |
| Scientific Atlanta Explorer DHCT | Volume Down + Volume Up + Info (on settop box; not remote) | Reboots box (starts up to blue EXPLORER screen) |
| Olivetti M20 | Ctrl + Reset | Soft resets the machine |
| TI Explorer Lisp Machine | Left-Ctrl Left-Meta Right-Ctrl Right-Meta Abort | Restart the system |
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