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What does "Ctrl + Alt + F12" do?

I accidentally pressed Ctrl+Alt+F12 and my display turned to black... I then had to make a reboot.. What did it do to my system? Also what does Alt+ F8 to F10 do?

Keyboard shortcut for pasting on the GNOME Terminal

We use Ctrl+V to paste stuff from clipboard, but this is not working on terminal window.

What is the keyboard shortcut to paste on the GNOME terminal?

Bring back `BackSpace` Keyboard Shortcuts on nautilus and thunar

I want to use the "BackSpace" button as a shortcut key on nautilus. I want to return to the previous folder whilst browsing the Home folder, just like windows 7.

Also I want the same thing while using Firefox, In a way that when I press the shortcut key I will return to the previous web page.

How do I remap certain keys or devices?

I'm searching for a way to remap certain keys in ubuntu.

i.e.

I'd like to change PgUp to Home or PgDown to End.

Does a built-in command or a tool exist reassign keys in Ubuntu/GNOME?

What is the "show desktop" keyboard shortcut?

I just upgraded to 11.10 from 11.04. Previously the shortcut to show the desktop was Super key + D (same as in Windows), But now it is not working. What is the new shortcut?

How do I deactivate F1 and F10 keybindings in gnome-terminal?

How can I turn off the F1 (help) and F10 (notifications menu) key bindings?

First one I need for screen utility and second to exit mc in console.

There are no such key bindings in the Keyboard Shortcuts system settings.

How do I modify or disable the HUD's use of the Alt key?

A number of games, Emacs, and the terminal make extensive use of the Alt key. Can Unity be configured to respect this key, rather than launching the HUD with it?

Keyboard shortcut to move windows between monitors?

I remember there used to be a setting under Compiz that set a keyboard shortcut for moving applications between physical (but combined as a single xscreen) screens, similar to moving between logical screens, like Ctrl-Alt-Shift-← / → / ↑ / ↓.

Any way to do this under Unity?

How to emulate winkey+arrow Windows 7's maximise shortcut keys?

In Windows 7 (not sure about other versions) you have these shortcuts:

• winkey+up maximize current window
• winkey+down unmaximize
• winkey+right maximize height, set width as half of the screen and stick the window on the right
• winkey+left does the same on the left

I'm particularly interested in the last two shortcuts.

How can I set default terminal used in Unity?

How can I set the default terminal used in Unity?

I would like to use the Ctrl+Alt+T hotkey to start a non-default terminal. The default terminal is gnome-terminal.

Where can I change the default terminal value?

How do I set a shortcut to screenshot a selected area?

In gnome's screen shot program, the quick keys PrtScn captures the entire screen and alt+PrtScn captures the active window. Is there a way to script or set up the third capture option of a selected area?

Update: I don't seem to have this key already mapped...

Bash: delete word ahead of cursor

Consider the following bash prompt, where ^ denotes the prompt location:

svn commit -m very/long/path/to/some/file "[bug 123456] Fix the pixel issue"
              ^

I'd like to commit a different file with the same message. How can I delete the current word, from cursor location to the next space? Is there also a shortcut for backward deletion, form the cursor to the first space backwards?

Update: ctrl+w erases backwards, but which shortcut erases one word forward?

How can I enable Ctrl+Alt+Backspace?

Ctrl+Alt+← can usually be set to restart X, however I can't find the option to allow this (it is disabled by default).

I have looked in System->Preferences->Keyboard and System->Preferences->Keyboard Shortcuts but I can't find an option to enable it.

Where can I change this setting?

How do I quickly switch between workspaces in unity?

I'm using Ubuntu 11.10 with Unity and would like to switch between workspaces with a keyboard shortcut.

Is there any way to achieve this?

How to use Alt+Shift to switch keyboard layouts?

I recently upgraded to Ubuntu 13.10, with the new keyboard handling system. The little "switch keyboard" option does not let me set it to Alt+Shift. How can I get this keyboard binding, as I have absolutely no interest in using the Mac-esque Super+Space combo?