Install script incorrectly assumes a Debian/Ubuntu based system if the system is x86_64 and not Redhat

[Lindenk]

Summary

Install script incorrectly assumes a Debian/Ubuntu based system if the system is x86_64 and not Redhat.

Bug Reports

There are clearly builds for generic linux operating systems by just extracting and installing a tarball per the third check of the install script. Adding in a check if the system is actually debian based (perhaps even just with a $(which dpkg)) would allow the script to run properly on other linux distros.

The actual error is when the script attempts to install a .deb package with dpkg.

Version

Binary: /usr/bin/rexray
Flavor: client+agent+controller
SemVer: 0.11.3
OsArch: Linux-x86_64
Commit: 3afc794
Formed: Tue, 12 Jun 2018 11:45:51 EDT

Although the install script itself does not have a version.

Expected Behavior

The install script installs rexray.

Actual Behavior

The install script does not install rexray.

Steps To Reproduce

Running 'curl -sSL https://rexray.io/install | sh -' on any non-redhat, non-debian based system.