Steps to download Release Automation 6.4 for Linux
CA Release Automation - Release Operations Center (Nolio)
CA Release Automation - DataManagement Server (Nolio)
How to download installation image from Support Portal?
Release Automation 6.4
CA Support Portal
Select [Download Management].
Search [CA Release Automation].
Select the product.
Select blank to [RELEASE] at left side.
Select [6.4] to [Release] at upper right.
Click next page. And then, install media of RA 6.4 for linux can be found.