Assuming that you are using SAP HANA support package stack SPS08 or later, you will get SAP HANA lifecycle manager (HDBLCM) in location: /sapmnt/<SID>/hdblcm.
Point to note:
1.) ./hdblcmgui - allows you to perform configuration tasks.
2.) ./hdblcm - allows you to do the install and update.
Regards,
Dilip.