Instruct: Classify the given review as either positive or negative.
Query: mediocre book

Unfortunately, a mediocre book on an important topic.The presentation is confusing. The book's separation of ssh1 and ssh2, although logical, is poorly executed. The text is cut-and-paste in many places. Keeping "local hosts" and "remote hosts" clear in your mind while reading is a chore.Hopefully the upcoming O'Reilly text will do a better job.