1. Open the new file with a text editor such as vi or nano:
cd /etc/yum.repos.d vi r1soft.repo
or
nano -w /etc/yum.repos.d/r1soft.repo
2 Insert the following text into the file and save the file:
 [r1soft] 
name=R1Soft Repository Server
 baseurl=http://repo.r1soft.com/yum/stable/$basearch/ 
enabled=1 
gpgcheck=0
3 To verify what is written to the file, use the following command:
cat /etc/yum.repos.d/r1soft.repo 
4. yum install serverbackup-enterprise-agent 
5. Adding server key
r1soft-setup --get-key https://backup server hostname (Eg:rssg-bu5.readyspace.com)