##Make sure to sed key to chmod 600

#From Local To Remote
rsync -rtulv -e "ssh -i $HOME/.ssh/LuuxBier_com" /root/test/ root@<ip or FQDN>:/root/test/

#From Remoter To Local
rsync -rtulv -e "ssh -i $HOME/.ssh/LuuxBier_com" root@<ip or FQDN>:/root/test/ /root/test/

##Rsync
# -r          recurse into directories
# -t          preserve modification times
# -u          skip files that are newer on the receiver		  
# -l          copy symlinks as symlinks
# -v          increase verbosity
# -e          specify the remote shell to use

##SSH 
#  -i         specify identity_file