Shortcut keys for Ubuntu OS!

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     Shortcut keys are very useful for computer operations. Sometimes these key combinations seems very helpful to complete computer work at less times. Shortcut keys are for keyboard based usage.  There are so many short cut key combinations available in almost every operating system. Following combinations of shortcut keys are for Linux based operating system Ubuntu OS mainly(may work on others OS). These Combinations are as follows --

A. Graphical User Interface -

Open Terminal	Ctrl + Alt + T
Create a new document	Ctrl + N
Open a document	Ctrl + O
Save the current document	Ctrl + S
Print the current document	Ctrl + P
Close the current document	Ctrl + W
Quit the current document	Ctrl + Q
Rename a file	F2 (after selection)
Cut	Ctrl + X
Copy	Ctrl + C
Paste	Ctrl + V
Select all	Ctrl + A
Switch to the first virtual terminal	Ctrl + Alt + F1
Select the different virtual terminals	Ctrl + Alt + F1(F2)(F3) and so on.
Switch between open programs	Alt + Tab
Lock the screen	Ctrl + Alt + L
Opens the Applications menu	Alt + F1
Move to the next/previous workspace -	Ctrl + Alt + Left / Right arrow key
Resizes the current window	Alt + F8
Move the current window	Alt + F7
Unmaximizes the current window	Alt + F5
Close the current window	Alt + F4
Minimizes the current window	Alt + F9
Maximizes the current window	Alt + F10
Open the Run Application dialog box	Alt + F2
Take Screeshot	PrntScr

B. Character User Interface (Terminal) -

Log out /Exit	Ctrl + D
Find the last command matching the entered letters	Ctrl + R
Delete the command from the cursor right	Ctrl + K
Delete the word before the cursor	Ctrl + W
Clear the terminal output	Ctrl + L
Copy the highlighted command to the clipboard	Shift + Ctrl + C
Paste the contents of the clipboard	Shift + Ctrl + V
Scroll terminal output	Shift+pg up / pg dn