Hi Shyam,
You have 10 years of exp in Unix and if you also know Database Concepts and SQL then you can opt for SAP HANA Technology Consultant area - it generally deals with -
Installing HANA
System Architecture Design
System Architecture Implementation
Backup & Recovery
Security and Authorization
Data Provisioning
If you are willing to switch to HANA then you will have to learn lots of things regarding SAP esp for Data Provisioning as it deals with transfer of data from SAP or Non-SAP system to HANA system
You can learn more about Technology Consultant area in the below links
http://scn.sap.com/community/hana-in-memory/blog/2013/01/10/sap-hana-certification-pathways