Using ssh-keygen to log in securely without a password

To generate a secure public/private key pair to log in securely, and without a password.

At the command line:

ssh-keygen -d
hit return three times
ssh username@ftp.yourdomain.com 'test -d .ssh || mkdir -m 0700 .ssh ; cat >> .ssh/authorized_keys && chmod 0600 .ssh/*' < ~/.ssh/id_dsa.pub
press return
wait for it to say Password
enter the password
You’re now signed in.
exit
Now you can test it: ssh username@ftp.yourdomain.com

“Source”:http://blog.dreamhosters.com/kbase/index.cgi?area=138

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