blog.costan.us

Victor Costan

Wednesday, April 30, 2014. Restoring Ruby 2.0 on Ubuntu 14.04. For some reason, Ubuntu 14.04 sets up MRI 1.9.1 as the default Ruby ( /usr/bin/ruby. And friends) version, even if Ruby was installed using the ruby2.0. Package. This post outlines a quick and dirty method for restoring Ruby 2.0 as the default Ruby version. Issue the following commands in a shell. Sudo rm /usr/bin/ruby /usr/bin/gem /usr/bin/irb /usr/bin/rdoc /usr/bin/erb. Sudo ln -s /usr/bin/ruby2.0 /usr/bin/ruby. Sudo gem update - system.

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Wednesday, April 30, 2014. Restoring Ruby 2.0 on Ubuntu 14.04. For some reason, Ubuntu 14.04 sets up MRI 1.9.1 as the default Ruby ( /usr/bin/ruby. And friends) version, even if Ruby was installed using the ruby2.0. Package. This post outlines a quick and dirty method for restoring Ruby 2.0 as the default Ruby version. Issue the following commands in a shell. Sudo rm /usr/bin/ruby /usr/bin/gem /usr/bin/irb /usr/bin/rdoc /usr/bin/erb. Sudo ln -s /usr/bin/ruby2.0 /usr/bin/ruby. Sudo gem update - system.

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Victor Costan | blog.costan.us Reviews

https://blog.costan.us

Wednesday, April 30, 2014. Restoring Ruby 2.0 on Ubuntu 14.04. For some reason, Ubuntu 14.04 sets up MRI 1.9.1 as the default Ruby ( /usr/bin/ruby. And friends) version, even if Ruby was installed using the ruby2.0. Package. This post outlines a quick and dirty method for restoring Ruby 2.0 as the default Ruby version. Issue the following commands in a shell. Sudo rm /usr/bin/ruby /usr/bin/gem /usr/bin/irb /usr/bin/rdoc /usr/bin/erb. Sudo ln -s /usr/bin/ruby2.0 /usr/bin/ruby. Sudo gem update - system.

INTERNAL PAGES

blog.costan.us

1

Victor Costan: December 2009

http://blog.costan.us/2009_12_01_archive.html

Sunday, December 6, 2009. Fat iPhone Static Libraries: One File = Device Simulator Code. This post explains how to build a static iPhone library that contains ARM code (for iPhones and iPod Touches) and x86 code (for the simulator), in a single file. This is useful for companies which do not wish to expose their source code when distributing iPhone code, e.g. AdMob. The currently accepted practice. Open a Terminal, cd into your library's Xcode project directory, and issue the following commands. Tool, bu...

2

Victor Costan: August 2010

http://blog.costan.us/2010_08_01_archive.html

Sunday, August 15, 2010. Helper Testing in Rails 3. This post shows how to test both simple and complicated testers in Rails 3. The method outlined here should work in Rails 2.3 as well, but it might not be the best method. The skeleton helper testcase class generated by Rails 3 inherits from ActionView: TestCase. Simple helpers can be tested by comparing their return value with a golden string. For more complex helpers, use render :text. The code listing below demonstrates this. In the helper's output.

3

Victor Costan: March 2013

http://blog.costan.us/2013_03_01_archive.html

Sunday, March 31, 2013. Setting Up munin on Ubuntu Server 13.04 with nginx. This post explains how to configure munin. On a single Ubuntu 13.04 server that uses nginx. Monitoring is supposed to save time by debugging and predicting / avoiding catastrophes. However, setting up munin on Ubuntu was a time-consuming trial-and-error process for me. The official instructions. Run the following command to install the packages needed for munin. Sudo apt-get install munin munin-node spawn-fcgi libcgi-fast-perl.

4

Victor Costan: Quick Fix for Ugly Font Rendering in Windows Browsers

http://blog.costan.us/2011/02/quick-fix-for-ugly-font-rendering-in.html

Tuesday, February 8, 2011. Quick Fix for Ugly Font Rendering in Windows Browsers. This post presents a quick fix for the broken font rendering problem. On Windows browsers. The quick fix disables @font-face. CSS directives on Windows, using JavaScript. The next sections present the code, and describe the motivation behind this solution. All the code is standard JavaScript, except for $(window).load. I didn't want to degrade the experience for all my other users, so taking out the @font-face. Regardless o...

5

Victor Costan: Getting MRI 1.9.2 on Ubuntu 11.10

http://blog.costan.us/2011/10/getting-mri-192-on-ubuntu-1110.html

Tuesday, October 18, 2011. Getting MRI 1.9.2 on Ubuntu 11.10. The release of Ubuntu 11.10 (Oneiric) brings much-needed updates to the Ruby packaging. We can now get a sane Ruby environment in Ubuntu with a few commands. Sudo apt-get install ruby1.9.1-full. Sudo update-alternatives - set ruby /usr/bin/ruby1.9.1. Sudo env REALLY GEM UPDATE SYSTEM=1 gem update - system. This sets up a fully working MRI 1.9.2 environment, with an up-to-date version of Rubygems. Subscribe to: Post Comments (Atom).

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Victor Costan · GitHub

https://github.com/costan

Http:/ blog.costan.us. Interface for ISO 7816 Smart Cards. Jul 14, 2015. Automatically starts and stops the daemons in a Rails application. Sep 17, 2012. Security in webapps slides. Slides for the 6.470 lecture on Security in Web Applications. Feb 28, 2012. A Ruby Gem Library for Ethernet Communication. Jan 13, 2012. Slides for the 6.470 lecture on Server Admin and Deployment. Jan 20, 2011. Html css js slides. Slides for the 6.470 lecture on HTML, CSS and JavaScript. Jan 14, 2011. Jan 14, 2011.

transientneha.blogspot.com

Neha Narula: Who Really Owns Your Phone?

http://transientneha.blogspot.com/2013/01/who-really-owns-your-phone.html

Sunday, January 6, 2013. Who Really Owns Your Phone? I was working on some text about interoperability on the web, and found myself getting up in arms about how far we've strayed from the initial ideals of the internet. The web was founded on principles of open, democratic access. Any computer could put up a website; given an internet service provider, any user could connect to it. So, just avoid the app store, right? The debate over HTML5 websites vs. native apps on mobile is an excellent example of...

costan.us

statementofobjectives - Victor Costan's Personal Web Site

http://www.costan.us/statementofobjectives

This is the Statement of Objectives that I have submitted in support of my application to MIT's PhD program in Computer Science. It reflects what I hope to accomplish over the next few years. Better, with a few friends. No legions required. Now, I want to share this rediscovered joy with others, and hopefully reduce the migration of smart hackers to management, consulting, and finance. Open-source project. I have also published my research findings in the Lecture Notes in Computer Science for the CAR...

costan.us

bio - Victor Costan's Personal Web Site

http://www.costan.us/bio

Victor Costan got infected with a passion for coding at the age of 10, and proceeded to earn a M.Eng in Computer science from MIT. Victor also holds a B.S. in Management that he pursued as he fell prey to the belief that great software requires legions of developers manipulating bloated code bases in repetitive ways.

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recruiters - Victor Costan's Personal Web Site

http://www.costan.us/recruiters

Information for Job Recruiters. I have been accepted into the PhD program of my dreams, and I expect to graduate sometime around 2017. Until then, please contact me at victor@costan.us. You can get my latest resume here. My latest MIT transcript is available here. C) Victor Costan, 2007.

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myprojects - Victor Costan's Personal Web Site

http://www.costan.us/myprojects

Ruby on Rails and iPhone. I wanted to do an iPhone application. Two of my friends wanted to learn Ruby on Rails. The result was a stock trading simulation game, with an iPhone user interface, and a Ruby on Rails web site. The game is available in the iTunes App Store, and its website is http:/ istockplay.com. I separated the reusable code in StockPlay, and put it into the ZergSupport. Open-source toolkit, available on GitHub under the MIT license. It's also available on GitHub under the MIT license.

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socialnetworks - Victor Costan's Personal Web Site

http://www.costan.us/socialnetworks

Follow my work on GitHub. Follow me on Twitter. Connect with me on LinkedIn. Friend me on Facebook.

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myschedule - Victor Costan's Personal Web Site

http://www.costan.us/myschedule

C) Victor Costan, 2014.

gwhiz.wordpress.com

Installing Leopard From DMG | gWHIZ

https://gwhiz.wordpress.com/2006/09/21/installing-leopard-from-dmg

Apple, Mac OSX, Yosemite, iChat for Windows, iPhone emulator and such. Laquo; How To Install OS From DMG? Installing Leopard From DMG. EDIT DEUX: Thanks to DIGG this is really taking off. There are a variety of really good ‘other’ methods outlined in the comments. Apparently LOTS of people have found the following useful. I hope you will too. In return, if you’d favorite the gWHIZ blog at Technorati. I’d really appreciate it as I’m trying to break into their top 50,000 blogs by years end.]. However, I wi...

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Home - Francesco Costa

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Diez lugares que no debes perderte si visitas Argentina. Argentina es uno de los destinos turísticos más visitados en América del Sur y no es por simple capricho, pues es un país que tiene mucho por ofrecer. Desde bellos escenarios naturales, lagos, montañas y nevados, hasta hermosas playas y una gastronomía…. Los diez mejores lugares para visitar en Chile. Los cinco arcos formados por la naturaleza más bellos del planeta. Los cinco mejores destinos para las chicas viajeras. El Caribe es sin duda una de ...

blog.costan.us

Victor Costan

Wednesday, April 30, 2014. Restoring Ruby 2.0 on Ubuntu 14.04. For some reason, Ubuntu 14.04 sets up MRI 1.9.1 as the default Ruby ( /usr/bin/ruby. And friends) version, even if Ruby was installed using the ruby2.0. Package. This post outlines a quick and dirty method for restoring Ruby 2.0 as the default Ruby version. Issue the following commands in a shell. Sudo rm /usr/bin/ruby /usr/bin/gem /usr/bin/irb /usr/bin/rdoc /usr/bin/erb. Sudo ln -s /usr/bin/ruby2.0 /usr/bin/ruby. Sudo gem update - system.

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Notícias do Plano Municipal de Saneamento Básico de Costa Rica - MS

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