The Guide shows you Step-by-Step How to Install MongoDB Database Release for Linux Kubuntu 13.04 Raring Ringtail i386/amd64 KDE4 Desktop.
Finally, the post’s Content is Expressly Reduced to Give Focus to the Essentials Instructions and Commands.

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Open Terminal Window
(Press “Enter” to Execute Commands) -
SetUp Apt Repo for Latest MongoDB Installation:
MongoDB Apt Repo Setup