create ssh for vps on ubuntu

gistfile1.txt

#Simple Steps 
#If you dont have any ssh on your local pc create one first
$ ssh-keygen -t rsa
Enter file in which to save the key (/home/demo/.ssh/id_rsa): ##this is for name ssh
Enter passphrase (empty for no passphrase): ##this for password

## After create ssh on your local pc 
##aPaste on your VPS with terminal method (Ubuntu)
$ cat ~/.ssh/id_rsa.pub | ssh [email protected] "mkdir -p ~/.ssh && cat >>  ~/.ssh/authorized_keys"

## Finis and open vps with terminal
## Follow this step
$ sudo nano /etc/ssh/sshd_config
## Find somthing like this and change be like this
PermitRootLogin without-password
##save ctrl+x
##and reload ssh
$ reload ssh
## Finish , after this when you restart and login again you will be login with ssh only
## Cheers
## Article find on : https://www.digitalocean.com/community/tutorials/how-to-set-up-ssh-keys--2