rsync is a very useful utility which can be used to take backup or copy data from one filesystem to other. The best part with rysnc is that it considers incremental data while copying and syntax is easy.
rsync is popular with Linux and included in most versions by default. If you don’t have rsync in machine you can simply install it by following commands:-
Ubuntu / Debian
sudo ap-get update sudo apt-get install rsync
RHEL / CentOS
yum install rsync