How to add RSA key to authorized_keys file?

Question

I\'ve created an RSA public key and I want to add that to authorized_keys file, but there is no such file in my Ubuntu 11.10 machine.

How can I add the key

Answer 1

Make sure when executing Michael Krelin's solution you do the following

cat  >> ~/.ssh/authorized_keys

Note the double > without the double > the existing contents of authorized_keys will be over-written (nuked!) and that may not be desirable