Run SSH commands remotely without Key Authentication

Reference

https://askubuntu.com/questions/92981/paswordless-rsync-over-ssh-without-key-authentication-un-safe

https://stackoverflow.com/questions/44337659/host-key-verification-failed-with-sshpass-rsync

Use sshpass

sshpass -p 'sshpassword' rsync --progress -avz -e ssh test@remhost:~/something/ ~/bak/

To bypass error when connecting to a new server, disable StrictHostKeyChecking

sshpass -p "yourpassword" rsync -rvz -e 'ssh -o StrictHostKeyChecking=no -p 22' --progress  root@111.111.111.111:/backup/origin /backup/destination/