Useful Shortcut Keys In Ubuntu

General keyboard shortcuts

Ctrl + A = Select all
Ctrl + C = Copy the highlighted content to clipboard
Ctrl + V = Paste the clipboard content
Ctrl + N = New (Create a new document, not in terminal)
Ctrl + O = Open a document
Ctrl + S = Save the current document
Ctrl + P = Print the current document
Ctrl + W = Close the close document
Ctrl + Q = Quit the current application

Keyboard shortcuts for GNOME desktop

Ctrl + Alt + F1 = Switch to the first virtual terminal
Ctrl + Alt + F2(F3)(F4)(F5)(F6) = Select the different virtual terminals
Ctrl + Alt + F7 = Restore back to the current terminal session with X
Ctrl + Alt + Backspace = Restart GNOME
Alt + Tab = Switch between open programs
Ctrl + Alt + L = Lock the screen.
Alt + F1 = opens the Applications menu
Alt + F2 = opens the Run Application dialog box.
Alt + F3 = opens the Deskbar Applet
Alt + F4 = closes the current window.
Alt + F5 = unmaximizes the current window.
Alt + F7 = move the current window
Alt + F8 = resizes the current window.
Alt + F9 = minimizes the current window.
Alt + F10 =  maximizes the current window.
Alt + Space = opens the window menu.
Ctrl + Alt + + = Switch to next X resolution
Ctrl + Alt + - = Switch to previous X resolution
Ctrl + Alt + Left/Right = move to the next/previous workspace

  Keyboard shortcuts for Terminal

Ctrl + A = Move cursor to beginning of line
Ctrl + E = Move cursor to end of line
Ctrl + C = kills the current process.
Ctrl + Z = sends the current process to the background.
Ctrl + D = logs you out.
Ctrl + R = finds the last command matching the entered letters.
Enter a letter, followed by Tab + Tab = lists the available commands beginning with those letters.
Ctrl + U = deletes the current line.
Ctrl + K = deletes the command from the cursor right.
Ctrl + W = deletes the word before the cursor.
Ctrl + L = clears the terminal output
Shift + Ctrl + C = copy the highlighted command to the clipboard.
Shift + Ctrl + V (or Shift + Insert) = pastes the contents of the clipboard.
Alt + F = moves forward one word.
Alt + B = moves backward one word.
Arrow Up/Down = browse command history
Shift + PageUp / PageDown = Scroll terminal output

  Keyboard shortcuts for Compiz

Alt + Tab = switch between open windows
Win + Tab = switch between open windows with Shift Switcher or Ring Switcher effect
Win + E = Expo, show all workspace
Ctrl + Alt + Down = Film Effect
Ctrl + Alt + Left mouse button = Rotate Desktop Cube
Alt + Shift + Up = Scale Windows
Ctrl + Alt + D = Show Desktop
Win + Left mouse button = take screenshot on selected area
Win + Mousewheel = Zoom In/Out
Alt + Mousewheel = Transparent Window
Alt + F8 = Resize Window
Alt + F7 = Move Window
Win + P = Add Helper
F9 = show widget layer
Shift + F9 = show water effects
Win + Shift + Left mouse button = Fire Effects
Win + Shift + C = Clear Fire Effects
Win + Left mouse button = Annotate: Draw
Win + 1 = Start annotation
Win + 3 = End annotation
Win + S = selects windows for grouping
Win + T = Group Windows together
Win + U = Ungroup Windows
Win + Left/Right = Flip Windows

Keyboard shortcut for Nautilus

Shift + Ctrl + N = Create New Folder
Ctrl + T = Delete selected file(s) to trash
Alt + ENTER = Show File/Folder Properties
Ctrl + 1 = Toggle View As Icons
Ctrl + 2 = Toggle View As List
Shift + Right = Open Directory (Only in List View)
Shift + Left = Close Directory (Only in List View)
Ctrl + S = Select Pattern
F2 = Rename File
Ctrl + A = Select all files and folders
Ctrl + W = Close Window
Ctrl + Shift + W = Close All Nautilus Windows
Ctrl + R = Reload Nautilus Window
Alt + Up = Open parent directory
Alt + Left = Back
Alt + Right = Forward
Alt + Home = go to Home folder
Ctrl + L = go to location bar
F9 = Show sidepane
Ctrl + H = Show Hidden Files
Ctrl + + = Zoom In
Ctrl + - = Zoom Out
Ctrl + 0 = Normal Size

(Όσοι θέλετε να φτιάξετε τις δικές σας συντομεύσεις, μπορειτε να το κάνετε πηγαίνοντας System->Preferences->Keyboard Shortcuts.)

Mouse Tricks

Launcher

• Clicking and holding an icon and then dragging it around will allow you to reorder it on the launcher. You can also drag it off to the right of the launcher to move it around. Note that you need to make an explicit movement to the right to move the icon off the launcher before you can move it around.
• Dragging and Dropping an icon into the trash can will remove it from the Launcher. The program itself will remain installed and accessible through the dash.
• Scrolling the mouse wheel while over the Launcher scrolls the icons if you have too many and need to move around quickly.

Window Management

• Maximizing - Dragging a window to the top panel, or double-clicking a window's titlebar, or Alt-F10, will maximize it.
• Restore - There are two ways to restore, or unmaximize, the topmost maximized window of the current monitor for this workspace (not using the window controls)
  • Double clicking on the top panel (but not in the application's menu)
  • Dragging the top panel down.
• Middle click on Maximize - Maximize Window Vertically.
• Right click on Maximize - Maximize Window Horizontally
• Focus the topmost maximized window of the current monitor for this workspace: Left click on the top panel (but not in the application's menu)
• Tiling - Dragging a Window to the left/right border will auto tile it to that side of the screen.
• Middle click on an application's launcher icon - Open a new instance of the application in a new window. If the application isn't running it will just open it normally.
• Middle click on the top panel or window title bar (but not the menu) - send the current window behind all other windows.

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