instasll npm on redhat code example

Example 1: install node in redhat linux

# yum -y install nodejs
OR
# dnf -y install nodejs

Example 2: install node in redhat linux

-------------- As root user -------------- 
# curl -sL https://rpm.nodesource.com/setup_10.x | bash -

-------------- A user with root privileges  --------------
$ curl -sL https://rpm.nodesource.com/setup_10.x | sudo bash -