Permission denied (publickey,password). code example

Example 1: ssh error permission denied (publickey)

sudo service ssh restart

Example 2: ssh error permission denied (publickey)

sudo nano /etc/ssh/sshd_config
PermitRootLogin prohibit-password to PermitRootLogin yes 
PasswordAuthentication no to PasswordAuthentication yes

Example 3: permission denied (publickey password)

cat ~/.ssh/id_rsa.pub | ssh <user>@<hostname> 'cat >> .ssh/authorized_keys && echo "Key copied"'

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