To get ready for this recipe, you first need to check that your Java environment is configured properly; to do this, check that the JAVA_HOME environment variable is set. Even if PDI while starting up tries to guess the value of the JAVA_HOME environment variable from the system, it is always good practice to set the JAVA_HOME environment variable. As soon as this is done, you need to start Spoon, the PDI's graphical development environment. You can start Spoon from the command line using the appropriate script located in the PDI's home directory. As soon as you get into the PDI home directory, you can run the proper script depending on the specific operating system environment.
Have a look at the following options:
If you are on Windows, use the script spoon.bat to start the application
If you are on Linux or Mac, use the script spoon.sh to start the application