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SSH escape characters are an important additional element to note.
Occasionally, you can be connected to a system and your connection times out, locking up your session.
This usually manifests in the form of an unblinking and unresponsive Terminal. You generally can't hit Ctrl + D to log out, and can't type.
You would instead hit the following keys:
~.
While the key combination is officially listed as ~. it actually requires the Enter key being pressed first (as in, newline), so it's frequently written as \n~.
This tip is brought to you by an eagle-eyed technical editor!
This tip is brought to you by an eagle-eyed technical editor!
That's a tilde character (find it on your keyboard, usually using the Shift key), followed by a dot.
Your session should immediately disconnect.
Check out the SSH manual page for more escape characters.