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Every now and then some key combination clears my working (Gnu) screen and brings up this message:

Screen used by <username> on host01

What key combination causes this and what does it signify?

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up vote 7 down vote accepted

According to this source it's the key combination Ctrl+a and then x.

It signifies locking the screen and unlocking it with your password.

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@vfclists, if you find this disruptive, you can add bind x to ~/.screenrc so that key combination will no longer work. – Arcege Jul 6 '14 at 0:16

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