Shortcuts for Linux Window System.
Ctrl + Alt + +
Switch to the next resolution in the X Window System. This works if
you've configured more than one resolution for your X server. Note that
you must use the + in your numeric keypad.
Ctrl + Alt + -
Switch to the previous X resolution. Use the - in your numeric keypad.
MiddleMouseButton
Paste the highlighted text. You can highlight the text with your left mouse button (or with some other highlighting method, depending on the application), and then press the middle mouse button
to paste. This is the normal copy-paste way in the X Window System, but it may not work in some X applications.
If you have a two-button mouse, pressing both of the buttons at the
same time has the same effect as pressing the middle one. If it
doesn't, you must enable 3-mouse-button emulation.
This works also in text terminals if you enable the gpm service.
Ctrl + Alt + Backspace
Kill the X server. Use this if X crashes and you can't exit it normally. If you've configured
your X Window System to start automatically at bootup, this restarts the server and throws you back to the graphical login screen.
Ctrl + Alt + F7
Switch to the GUI. If you have X Window System running, it runs in the seventh virtual terminal by default. If X isn't running, this terminal is empty. Depending on your distro it may just be ALT + F7.
Ctrl + Alt + Fn
Switches screens.
Ctrl+Alt + one of the function keys
Displays a new screen. F1 through F6 are text (console) screens and F7 is a graphical screen.
Ctrl + Tab
Switch tasks. If you have more than one application.
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