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Json Marruffo
Works at Aha! Labs
Attended University of Colorado at Colorado Springs
Lives in Colorado Springs, CO
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Having fun.
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  • Aha! Labs
    Co-founder, 4 - present
  • Boy Scouts of America (Volunteer)
    Scoutmaster, 4 - present
  • U.S. Environmental Protection Agency
    IT Specialist, 9 - present
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Colorado Springs, CO
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Sierra Marde, CA - Arcadia, CA - Pacific Beach, CA - Fort Knox, KY - Fort Carson, CO
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719-357-6630
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Good for you.
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"Keep moving forward."
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I get to celebrate Father's Day.
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  • University of Colorado at Colorado Springs
    M.A. Communication, 2009 - 2012
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Json Marruffo

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Let's see how these work for a site facelift. 
UI Kits, Templates and Snippets, built with Bootstrap, that will speed up your front-end development. Join 50.000+ users and to access all our free items!
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Json Marruffo

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Interesting, and it's surprising to see such a new language as Swift in the top ten.

The Top 10 Languages At Devpost’s Hackathons:

1. HTML/CSS (see note below)
2. JavaScript
3. Python
4. Java
5. C/C++
6. PHP
7. Objective-C
8. C#
9. Swift
10. JSON (which isn’t … really a programming language, but is on their list for some reason, so I’m including #11 too)
11. Ruby
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Json Marruffo

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Yes, please. We will be playing this when it arrives. I think we're gonna need a bigger display. I'm thinking a 70 or 80-inch will do the trick. #sizematters , right?
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Json Marruffo

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True story.
 
That doesn't sound fun
but does it matter to who craves for fame?

dilbert.com/strip/2015-06-07
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Json Marruffo

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Nice setup. All the possibilities, all the headaches.
 
What's that?

First, it's a $35 quad core ARM hardware with 1 GByte of RAM, called "Raspberry Pi 2", running UBUNTU.

Then it depends, what YOU want it to be:

It can be a CEPH storage brick:

Connected to a Gbit Switch, then several Raspberry Pi's 100 Mbit network connectors add up to a super fast storage system with parallel download to your client machines.

Then it can be a server:

Web, FTP, SMB, NFS, #OwnCloud, database ....

It can be a "Snappy Server"

"Snappy Servers are normal Linux servers, but configured a little bit different: You can install and run Redhat, SuSE, Debian, Android Linux distributions in parallel, totally independent from each other. In only 1 GByte RAM? Yes, thanks to #LXC and KSM (Kernel Samepage Merging). Running on one "brainsplit" Linux kernel, multiple, identical binaries only are stored once in RAM. Clever, isn't it? It's an old UNIX feature!

It can be your desktop computer:

What? With only 1 GByte? Yes! Linux isn't wasting so much resources, compared to Windows. Absolutely sufficent for home and business use.

It can be a terminal server:

AMD 8350 with 8 cores and 32 GByte is about $500. But you can run easily 50 terminal clients on it, thanks to KSM. #Citrix like. You even can run Windows in a #KVM container, accessing it via RDP. Graphics output redirected to your -> Raspberry Pi desktop!

It can be an external, accellerated 3D graphic card:

A Raspberry Pi 2 has a GPU, that is extremely fast. 24 GFLOPS. That's on par with INTEL core i5 GPU. But only consuming 2.5 watts! See yourself: https://youtu.be/0j-Wakm5B84 Traditionally, in UNIX, you can redirect graphic output to other machines around the globe. So feel free to redirect it to a Raspberry Pi 2 on your desktop. Or to many Raspberry Pi's at the same time, adding up to a giant screen. You only need to type in 2 commands:

"#xhost +" and "export DISPLAY=IP:0.0" on the other machine.

That's it! Or use free, open source http://synergy-project.org/ to redirect mouse, keyboard, display from or to Windows, Mac OS machines.

It can be a compute cluster:

Many RPis computing power adds up. GPU can be used for floating point calculations, too. It's open source.

It can be a storage cluster:

Using #CEPH, you can connect up to 4 external 4 Terabyte drives to each Raspberry Pi 2. 10, 20, ...100 slow Raspberry Pis (only 100 Mbit each!) add up to an ultra fast storage system. IBM Tivoli class! A highly "Redundant Array of Inexpensive Servers"!

It can be a FIREWALL:

Add a second 100 Mbit (or Gbit USB 2.0, limited to 222 MBit then!) network adapter, install your firewall GUI, that's it!

It can be a (MESH) ROUTER:

Add 2 or 3 WLAN adapters, install #OpenWRT, activate B.A.T.M.A.N. protocol, and you have a zero admin fully automatic, redundant #MESH ROUTER!

It can be a "silent proxy" to safe bandwidth:

Sometimes, in bigger companies, bandwidth to the internet can get slow. How about caching web pages? Typically, you simply set up a Squid caching proxy. For a "silent proxy" (such a thing, Akamai® is offering to Microsoft at e.g. "patch day"), users can't notice, you cut provider cable in two pieces and put a "Raspberry Pi 2 web accelerator" in between. With a simple Linux kernel firewall command you then silently redirect all traffic to destination port 80 to Squid port 3128 on your Raspberry Pi: "# iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128" That's all. Happy (fast) surfing! Combine with MESH Router and firewall!

It can be a machine control unit:

With 40 external GPIO connectors it can be used to control all kind of machines, robots, drones, ... Even realtime OSes are available for RPi. 50 microseconds resolution.

Finally, It can be a "training and testing machine":

Since UBUNTU on RPi 2 is absolutely identical to UBUNTU on big XEON iron, you may silently check out any possible configuration for final use on really big machines.

Have fun!
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I think the world needs a good $50 Linux tablet, or have I missed it?
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Json Marruffo

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Because everybody needs a bit of Sideshow Bob in his or her life.
 
If this doesn't strike fear in your heart... nothing will.
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love it
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Json Marruffo

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Wonder how this works compared to the tower garden?
 
This Intelligent Indoor Garden For Your House Grows Greens All Year Round

'The most local lettuce possible is the lettuce you grow in your living room.

[...]

The Ecosystem has three layers. On top, there's a growing platform with a horticultural LED that moves up and down, depending on the height of the plant. In the middle is a shelf for seedlings and micro-greens, like wheatgrass. And on the bottom is an aquarium. The three parts work together.'

http://www.fastcoexist.com/3052682/this-intelligent-indoor-garden-for-your-house-grows-greens-all-year-round
The most local lettuce possible is the lettuce you grow in your living room.
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Json Marruffo

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This is why you always opt for two-factor auth and never store passwords (if available) and never store passwords in a browser.
 
If you install software directly on your Mac instead of through the App store you don't have to worry, because what this exploit does is bypass the leaky internal sandboxes that the App store imposes. Traditional native apps have direct access to all local user resources anyway.

So, not only is the "App Store" an unnecessary gatekeeper, it's useless as well. Which is not surprising: these kinds of privilege elevation attacks are the bane of all complex internal security models.
Keychains raided, sandboxes busted, passwords p0wned, but Apple silent for six months
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Json Marruffo

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I'm not sure I want to read how to do this because I think I'd get myself into some trouble. It sounds AWESOME!
 
Did you ever think you could make liquid nitrogen in your own garage?
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Json Marruffo

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Ha, ha, ha!
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So is it 3-way or 4-way (split split split)
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Json Marruffo

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Ah, the days prior to intense cgi.
 
#ThrowbackThursday - We've got water, fog... all we need now is a downed X-wing!
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Years ago, I was tickled to meet a fellow who had worked on the motion control team for Lucas.
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Want to know why small business is dying and Internet retailers like Amazon are flourishing? Buy something from a local source like, Synergy Datacom. I ordered a $155 part (plus $13 shipping, size of a wall outlet) on December 10th. It was the wrong part so I had to return it (December 18th). Reluctantly, they took the part back with a 25% restocking fee, which from my brief searching on the Internet, is high because most businesses only charge %15. After I returned the product to the local shop I had to make several calls to get a status of the returned merchandise and received one email from the rep during this time stating that they were "working on it." On February 3rd, I received receipt for the original cost of the item minus the 25% restocking and shipping (both ways, $25.44 total). I won't get started on how they can't figure a tax credit properly on a return. This is why small business gets a bad image, because local outfits can't support the local consumer anymore. The local small business consumer gets the short end of the stick. I could have purchased the same item on Amazon, received free shipping because of the cost of the item, and then returned it, for free; and in less than two or three days. Remember, I paid for shipping to PICK THIS ITEM UP from the store and return for a second trip to start the return process. #smallbusiness #synergy #fail #lessonlearned #whybuylocal
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