Examples
Different application programs, user interfaces, and operating systems use the various control key combinations for different purposes.
| Key combination | Microsoft Windows/KDE/GNOME | Unix (command line and programs using readline) | Emacs (if different from Unix command line) |
|---|---|---|---|
| Ctrl+A | Select all | Beginning of line | |
| Ctrl+B | Bold | Backward one character | |
| Ctrl+C | Copy (can also be used as an alternative to Ctrl+command to terminate an application) | terminate application | Compound command |
| Ctrl+D | Font Window (Word Processing); Add to bookmarks (Browsers) | Forward delete, or if line is empty, end of input (traditional Unix) | Forward delete |
| Ctrl+E | Center Alignment (Word Processing) | End of line | |
| Ctrl+F | Find (usually a small piece of text in a larger document) | Forward one character | |
| Ctrl+G | Go To (Line number) | Bell | Quit - aborts current operation |
| Ctrl+H | Replace, or History in browsers | Delete previous character | Help key |
| Ctrl+I | Italic (sometimes incremental search) | Command line completion | Same as Tab key |
| Ctrl+J | Justify | Line feed (LFD) | LFD (to evaluate Lisp expressions) |
| Ctrl+K | Insert Hyperlink (Word 2007) | Cut ("Kill") text between cursor and end of line | |
| Ctrl+L | Create List, Left align (word processing) | Clear screen | Redraw window/terminal, and recenter view around current line |
| Ctrl+M | Decrease margin by 1/2 inch (Microsoft Word) | Same as Enter key | |
| Ctrl+N | New (window, document, etc.) | Next line (in history) | Next line |
| Ctrl+O | Open | Flush output | Insert ("open") new line |
| Ctrl+P | Previous line (in history) | Previous line | |
| Ctrl+Q | Quit application | Resume transmission | Literal insert |
| Ctrl+R | Refresh page, Right align (word processing) | Search backwards in history | Search backwards |
| Ctrl+S | Save | Pause transmission | Search forward |
| Ctrl+T | Open New Tab | Transpose characters | |
| Ctrl+U | Underline | Delete text between beginning of line and cursor | Prefix numerical argument to next command |
| Ctrl+V | Paste | Literal insert | Page down |
| Ctrl+W | Close window or tab | Delete previous word | Cut |
| Ctrl+X | Cut | Compound command | |
| Ctrl+Y | Redo (sometimes Ctrl+Shift+Z is used for this) | Paste | |
| Ctrl+Z | Undo | Suspend program | Iconify window |
| Ctrl+[ | Decrease font size | Same as Esc key | Same as Modifier key (Alt key) |
| Ctrl+End | Bottom (end of document or window) | undefined or rarely used | Bottom (end of text buffer) |
| Ctrl+Home | Top (start of document or window) | undefined or rarely used | Top (start of text buffer) |
| Ctrl+Ins | Copy | undefined or rarely used | Copy |
| Ctrl+PgDn | Next tab | undefined or rarely used | Scroll window to the right |
| Ctrl+PgUp | Previous tab | undefined or rarely used | Scroll window to the left |
| Ctrl+Tab | Next window or tab | undefined or rarely used | |
| Ctrl+Shift+Tab | Previous window or tab | undefined or rarely used | |
| Ctrl + ← | Previous word | undefined or rarely used | Previous word |
| Ctrl + → | Next word | undefined or rarely used | Next word |
| Ctrl+Delete | Delete Next word | undefined or rarely used | Delete Next word |
| Ctrl+Backspace | Delete Previous word | undefined or rarely used | Delete Previous word |
| Ctrl+Alt+Backspace | undefined or rarely used | Restart X11 | undefined or rarely used |
| Ctrl + Alt + ↑ | Rotate Screen Upside down | unknown | unknown |
| Ctrl + Alt + ↓ | Rotate Screen Right side up | unknown | unknown |
| Ctrl + Alt + ← | Rotate Screen left | unknown | unknown |
| Ctrl + Alt + → | Rotate Screen right | unknown | unknown |
| Ctrl+Shift+Esc | Task Manager | unknown | unknown |
| Ctrl+Alt+Delete | Windows Security/Task Manager | Reboot (when on the console) | undefined or rarely used |
Read more about this topic: Control Key
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