1) How to restart GNOME without rebooting computer
A) Press ‘Ctrl + Alt + Backspace’
or
B) sudo /etc/init.d/gdm restart

2) How to switch to Console mode in GNOME
A) Press ‘Ctrl + Alt + F1′ (F2 - F6)
To switch between consoles in Console mode
B) Press ‘Alt + F1′ (F2 - F6)
To switch back to GNOME mode
C) Press ‘Alt + F7′

3) How to show all hidden files/folders in Nautilus

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