SHELL

authorized by ssh without password

# create keys
ssh-keygen -t rsa -b 4096 -f ~./.ssh/auth_rsa
# copy public key into sever
scp ~/.ssh/auth_rsa.pub user@ip:~/key.pub 
# connected to server
ssh user@ip
# move key into correct folder for you
cat ~/key.pub >> ~/.ssh/authorized_keys
rm -rf ~/key.pub
# and connect with secret key
ssh user@ip -i ~/.ssh/auth_rsa


#================= on linux will try =========================#
ssh-keygen -t rsa -b 4096 -f ~./.ssh/auth_rsa
ssh-copy-id -i ~/.ssh/auth_rsa.pub user@ip
ssh user@ip