Describe the different versions ofUNIX. Why is it important to have different ve

Describe the different versions ofUNIX. Why is it important to have different versions ofUNIX? Discuss the pros and cons of using open-sourcesoftware in the business environment. Provide at least one examplefor each position. Discuss why Java advocates supportUNIX. Note whether you agree with them and explain whyor why not.