Welcher Befehl erzeugt ein 2048-Bit-RSA-Schlüsselpaar unter ~/.ssh/id_rsa mit einer leeren Passphrase?
~/.ssh/id_rsa
ssh-keygen -t rsa -b 2048 -N ~/.ssh/id_rsa
ssh-keygen -t rsa -b 2048 -N "" -f ~/.ssh/id_rsa
ssh -t rsa -b 2048 -N "" ~/.ssh/id_rsa
ssh-keygen -t rsa -b 2048 -N "" -f ~/.ssh/authorized_keys