Logging without password
The common problem with ssh is to enter your password every time you log in. To automatize this, you can generate a pair of keys and copy the public one to the remote server. This way you can log in without typing password every time.
Generate keys on your local machine
Generate a new pair of keys and save it under /home/user/.ssh/id_rsa. Do not enter any passphrase if you do not want to type it every time you log in.
# generate keys with name rsa ssh-keygen -t rsa # so now we have two keys /home/user/.ssh/id_rsa # private /home/user/.ssh/id_rsa.pub # public
Make sure the .ssh folder exists on the remote server
You can create it easily by this command:
ssh user@remote mkdir -p .ssh
Add the public key to the remote server
In order to be recognized by the remote server we must append the contents of our public key into the .ssh/authorized_keys file.
cat ~/.ssh/id_rsa.pub | ssh user@remote 'cat >> .ssh/authorized_keys'