The Courseware Viewer

The Courseware Viewer is a Java program that lets you display a Descriptor Systems course.

Before you can perform the installation, you must first make sure you have a Java Runtime Environment (JRE) of at least version 7 installed on your computer.

Step One: Installing a Java Runtime Environment (JRE)

You can skip this step if you are sure that your computer already has a Java Runtime Environment (JRE) or Java Development Kit (JDK) with a version number of 7 or later.

You can download and install the latest JRE from the Oracle website. Please click the link below and follow the instructions to download and install the most recent, non-beta JRE.

Note: When you click on the link below, a new browser window will open in which you can install the JRE by clicking on the Free Java Download button and performing a Typical Installation. Please return back to this window after that installation.

Java Download Page

Step Two: Download the Courseware Viewer

After you have successfully installed the JRE, you can then download and install the Courseware Viewer. We provide three options:

If you are running Windows, we provide a Windows Installer that you can download and run.
If you are running OS X (macOS), we provide a Mac Viewer.app bundle that you can download, unzip and copy to your Applications folder.
If you are using a Unix-based operating system, you can use the manual installation technique described below.

Manual Installation

Note: You will need to configure the bin directory of your JRE into your system PATH environment variable to use this manual technique.

The manual technique involves downloading an archive containing the Courseware Viewer's files. To do so, click the link below:

viewer.tar.gz (for Unix-based operating systems such as Linux)

After downloading, please follow these steps to install and test the Courseware Viewer.

Open a console and change to the directory to which you downloaded the archive. Then unpack the archive to extract the JARs to a directory on your hard disk. This directory will act as the installation directory for the Viewer. If you are using Unix, you can use the "gzip" and "tar" programs to unpackage the archive:
```
tar zxvf viewer.tar.gz
chmod +X viewer.sh
            
```

In the console, change to the installation directory. Look for the viewer.sh file if you are running a Linux with a bash shell.

To launch the viewer, type
```
./viewer.sh
```
.