Been following instructions for editing sudoers file, made changes but the instructions say to exit using ctrl+x - this just gives me a capital X and a caret. Have tried ctrl:x ctrl+Q Esc.
Not using nano or any other gui (just putty terminal), the change I am trying to save is to set nano as default editor.
I just need to know which keys do I press and in which order?
Also as a side question are there any 'good' linux tutorial sites, I seem to trawl for hours trying to find the simplest answers? 'Good' as in explained well and without omitting vital info (like which gui you are using).
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To make changes to sudo from putty/bash: