Most USEFUL are "ctrl+alt+backspace" (to get out of a X session for any reason), then "ctrl+alt+delete" to reboot/power off computer, followed by "power button" for hard reboot.
Sure, most USED key would be "space" for me.
In reply to Re: The most useful key on my keyboard is:
by parv
in thread The most useful key on my keyboard is:
by cog
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