IBM BPM v8.5.5 Advanced Installation on Linux
This How To article describes how to install IBM Business Process Manager Advanced v8.5.5 on Linux. The Launchpad is used to start the Custom installation process and I then use the BPMConfig command to create and configure the deployment environment, after the binaries have been installed.
1. Installing IBM BPM v8.5.5 Advanced Binaries
The following steps outline how to prep your Linux system and install the BPM binaries.
1.1 Extract binaries to a common directory
After you have downloaded your IBM BPM Advanced binaries for Linux, you will need to untar them all to a common directory. Your directory structure should look like the figure below:

1.2 Preparation of the Linux Operation System
The Linux operating system needs to be prepped in order to install BPM successfully. Please perform the following steps found here:
1.3 Run the Launchpad
Please ensure you are running the Launchpad as a root user.

1.4 Select custom installation
Select the custom install option on the left menu
Verify that the Install as administrative user checkbox is checked
Click Install

1.5 Installation Manager will now open
Here you will see the Installation Manager screen open and it will show the components of the BPM product that will be installed on the system.
Click Next

1.6 Select fixes to install
Installation Manager will recommend a series of fixes to install with this installation. Select all the fixes.
Click Next

1.7 Prerequisite check
You may see an error like this if you are installing this on an unsupported OS. In this example, I am installing on CentOS, which is technically not a supported OS from IBM for the BPM product.
Click Next to ignore this error.

1.8 Accept license agreement
Scoll to the bottom of the license agreement
Ensure you accept the terms
Click Next

1.9 Select an install location for Installation Manager
Validate the Shared Resources installation location
Validate the install location for the Installation Manager
Click Next

1.10 Select the WebSphere Application Server location
Confirm the installation location for where WebSphere Application Server will be installed.
Click Next