How to configure NFS Server and Client Configuration on Ubuntu 15.04

NFS was developed at a time when we weren't able to share our drives like we are able to today -- in the Windows environment. It offers the ability to share the hard disk space of a big server with many smaller clients. Again, this is a client/server environment. While this seems like a standard service to offer, it was not always like this. In the past, clients and servers were unable to share their disk space.

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Vivaldi – A Chromium based web browser

Vivaldi is a freeware web browser developed by Vivaldi Technologies, a company founded by former Opera Software cofounder and CEO Jon Stephenson von Tetzchner.The browser is aimed at staunch technologists, heavy Internet users, and previous Opera web browser users disgruntled by Opera's transition from the Presto layout engine to the Blink layout engine, which removed many popular features in the process.[ Vivaldi aims to revive the old, popular features of Opera 12 and introduce new, more innovative ones.
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Compare PDF Files on Ubuntu

If you want to compare PDF files you can use one of the following utility

Comparepdf

comparepdf is a command line application used to compare two PDF files.The default comparison mode is text mode where the text of each corresponding pair of pages is compared. As soon as a difference is detected the program terminates with a message (unless -v0 is set) and an indicative return code.
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VirtualBox 5.0 released and ubuntu installation instructions included

VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 2.
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