http://www.engadget.com/2015/12/18/log-into-most-any-linux-system-by-hitting-backspace-28-times/
> doing so (pressing backspace for 28 times in a row) for builds utilizing the ubiquitous Grub2 bootloader -- that's to say just about all of them -- immediately bypasses the lock screen, initiates the "Grub rescue shell" and grants the user access to the system for whatever nefarious things they have in mind.
笑出声 hhhhhh
> doing so (pressing backspace for 28 times in a row) for builds utilizing the ubiquitous Grub2 bootloader -- that's to say just about all of them -- immediately bypasses the lock screen, initiates the "Grub rescue shell" and grants the user access to the system for whatever nefarious things they have in mind.
笑出声 hhhhhh