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	<title>blog.dt.org &#187; hacking</title>
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	<link>http://blog.dt.org</link>
	<description>a hacker's commentary</description>
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		<title>Entropy in Cloud Computing Applications</title>
		<link>http://blog.dt.org/index.php/2009/08/entropy-in-cloud-computing-applications/</link>
		<comments>http://blog.dt.org/index.php/2009/08/entropy-in-cloud-computing-applications/#comments</comments>
		<pubDate>Wed, 05 Aug 2009 20:54:49 +0000</pubDate>
		<dc:creator>dt</dc:creator>
				<category><![CDATA[cloud computing]]></category>
		<category><![CDATA[hacking]]></category>
		<category><![CDATA[entropy]]></category>

		<guid isPermaLink="false">http://blog.dt.org/?p=214</guid>
		<description><![CDATA[
			
				
			
		
Entropy, as it pertains to computer science and cryptography, is one of those topics that most of us (myself included) largely take for granted these days. In this context, entropy is a source of pseudorandomness that is typically collected by the operating system and made available to applications via a pseudorandom number generator (PNRG). We [...]]]></description>
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		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>How to Jailbreak iPhone 3.01</title>
		<link>http://blog.dt.org/index.php/2009/08/how-to-jailbreak-iphone-301/</link>
		<comments>http://blog.dt.org/index.php/2009/08/how-to-jailbreak-iphone-301/#comments</comments>
		<pubDate>Mon, 03 Aug 2009 23:34:58 +0000</pubDate>
		<dc:creator>dt</dc:creator>
				<category><![CDATA[hacking]]></category>
		<category><![CDATA[iphone]]></category>

		<guid isPermaLink="false">http://blog.dt.org/?p=208</guid>
		<description><![CDATA[
			
				
			
		
Apple just released the iPhone 3.01 firmware update, and that means it is time to update my jailbroken iPhone to 3.01 and then jailbreak it again. In the past, I have been a happy user of PwnageTool for the jailbreak, and I would be again except that PwnageTool hasn&#8217;t been updated yet for the 3.01 [...]]]></description>
		<wfw:commentRss>http://blog.dt.org/index.php/2009/08/how-to-jailbreak-iphone-301/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How to Detect the Front (Home) Page of a Wordpress Blog</title>
		<link>http://blog.dt.org/index.php/2009/08/how-to-detect-the-front-home-page-of-a-wordpress-blog/</link>
		<comments>http://blog.dt.org/index.php/2009/08/how-to-detect-the-front-home-page-of-a-wordpress-blog/#comments</comments>
		<pubDate>Sun, 02 Aug 2009 20:24:46 +0000</pubDate>
		<dc:creator>dt</dc:creator>
				<category><![CDATA[hacking]]></category>
		<category><![CDATA[wordpress]]></category>

		<guid isPermaLink="false">http://blog.dt.org/?p=195</guid>
		<description><![CDATA[
			
				
			
		
I recently wanted to add a Wordpress widget that would be conditionally visible in the sidebar of the front (home) blog page only. A reasonable search on this topic turns up a large collection of information and discussion &#8212; most of which turns out not to work. The following is a brief overview I what [...]]]></description>
		<wfw:commentRss>http://blog.dt.org/index.php/2009/08/how-to-detect-the-front-home-page-of-a-wordpress-blog/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>How to Create an Amazon EC2 AMI That is Larger Than 10GB</title>
		<link>http://blog.dt.org/index.php/2009/06/how-to-create-an-amazon-ec2-ami-that-is-larger-than-10gb/</link>
		<comments>http://blog.dt.org/index.php/2009/06/how-to-create-an-amazon-ec2-ami-that-is-larger-than-10gb/#comments</comments>
		<pubDate>Fri, 05 Jun 2009 05:59:55 +0000</pubDate>
		<dc:creator>dt</dc:creator>
				<category><![CDATA[cloud computing]]></category>
		<category><![CDATA[hacking]]></category>
		<category><![CDATA[amazon]]></category>
		<category><![CDATA[ami]]></category>
		<category><![CDATA[ec2]]></category>
		<category><![CDATA[s3]]></category>

		<guid isPermaLink="false">http://blog.dt.org/?p=184</guid>
		<description><![CDATA[
			
				
			
		
Recently, I have been dealing with an issue surrounding the 10GB size limit for AMIs within Amazon&#8217;s EC2 service. If you don&#8217;t what I&#8217;m talking about, here is a quick primer: a virtual instance running within Amazon&#8217;s Elastic Compute Cloud (EC2) service is launched from a read-only boot image that Amazon refers to as an [...]]]></description>
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		<slash:comments>1</slash:comments>
		</item>
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		<title>Perl DBI and DBD::mysql on Cygwin &#8212; Connecting to a Native Windows Build of MySQL on a Windows 2003 AMI Within Amazon EC2</title>
		<link>http://blog.dt.org/index.php/2009/04/perl-dbi-and-dbdmysql-on-cygwin-connecting-to-a-native-windows-build-of-mysql-on-a-windows-2003-ami-within-amazon-ec2/</link>
		<comments>http://blog.dt.org/index.php/2009/04/perl-dbi-and-dbdmysql-on-cygwin-connecting-to-a-native-windows-build-of-mysql-on-a-windows-2003-ami-within-amazon-ec2/#comments</comments>
		<pubDate>Thu, 30 Apr 2009 19:41:37 +0000</pubDate>
		<dc:creator>dt</dc:creator>
				<category><![CDATA[cloud computing]]></category>
		<category><![CDATA[hacking]]></category>
		<category><![CDATA[cygwin]]></category>
		<category><![CDATA[dbi]]></category>
		<category><![CDATA[ec2]]></category>
		<category><![CDATA[mysql]]></category>
		<category><![CDATA[perl]]></category>

		<guid isPermaLink="false">http://blog.dt.org/?p=153</guid>
		<description><![CDATA[
			
				
			
		
In my ongoing project involving Amazon&#8217;s EC2 service, I had a frustrating problem to solve this past weekend. I have an EC2 instance running Windows 2003, and on that instance I have a native Windows version of MySQL 5 and Cygwin. I wanted to use the mysqlhotcopy Perl script from the Cygwin command line against [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Ephemeral Drives in Amazon EC2 &#8211; When Are They Mounted?</title>
		<link>http://blog.dt.org/index.php/2009/03/ephemeral-drives-in-amazon-ec2-when-are-they-mounted/</link>
		<comments>http://blog.dt.org/index.php/2009/03/ephemeral-drives-in-amazon-ec2-when-are-they-mounted/#comments</comments>
		<pubDate>Fri, 13 Mar 2009 22:52:47 +0000</pubDate>
		<dc:creator>dt</dc:creator>
				<category><![CDATA[cloud computing]]></category>
		<category><![CDATA[hacking]]></category>
		<category><![CDATA[amazon]]></category>
		<category><![CDATA[ec2]]></category>

		<guid isPermaLink="false">http://blog.dt.org/?p=134</guid>
		<description><![CDATA[
			
				
			
		
Virtual instances running in Amazon&#8217;s EC2 service have several ephemeral disk drives that can be used for temporary storage (temporary because they are not persisted as part of the AMI). Recently, I had to figure out exactly when those drives were mounted and available during boot. The specific issue I was seeing was that I [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Cygwin Lighttpd with SSL</title>
		<link>http://blog.dt.org/index.php/2009/03/cygwin-lighttpd-with-ssl/</link>
		<comments>http://blog.dt.org/index.php/2009/03/cygwin-lighttpd-with-ssl/#comments</comments>
		<pubDate>Fri, 06 Mar 2009 23:55:24 +0000</pubDate>
		<dc:creator>dt</dc:creator>
				<category><![CDATA[cloud computing]]></category>
		<category><![CDATA[hacking]]></category>
		<category><![CDATA[lighttpd]]></category>
		<category><![CDATA[cygwin]]></category>

		<guid isPermaLink="false">http://blog.dt.org/?p=126</guid>
		<description><![CDATA[
			
				
			
		
Last week, I needed to configure a Windows 2003 AMI in EC2 to run lighttpd with SSL. Once again, a simple job that I thought would be quick and painless turned into an extensive hacking session. Here is a quick roadmap of what I did.
My initial thought was that there must be a native port [...]]]></description>
		<wfw:commentRss>http://blog.dt.org/index.php/2009/03/cygwin-lighttpd-with-ssl/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Cygwin SSHd on a Windows 2003 AMI Within Amazon EC2</title>
		<link>http://blog.dt.org/index.php/2009/02/cygwin-sshd-on-a-windows-2003-ami-within-amazon-ec2/</link>
		<comments>http://blog.dt.org/index.php/2009/02/cygwin-sshd-on-a-windows-2003-ami-within-amazon-ec2/#comments</comments>
		<pubDate>Thu, 19 Feb 2009 02:47:10 +0000</pubDate>
		<dc:creator>dt</dc:creator>
				<category><![CDATA[cloud computing]]></category>
		<category><![CDATA[development]]></category>
		<category><![CDATA[hacking]]></category>
		<category><![CDATA[cygwin]]></category>
		<category><![CDATA[ssh]]></category>

		<guid isPermaLink="false">http://blog.dt.org/?p=90</guid>
		<description><![CDATA[
			
				
			
		
Recently, I needed to configure a Windows 2003 AMI in EC2 to run a ssh server. I would have expected this to be a simple job, with a variety of choices for making this work, but in the end it was far more time consuming, complicated, and frustrating than I would have guessed. Here is [...]]]></description>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Installing Lighttpd, Ruby on Rails, FastCGI, and MySQL on RedHat Enterprise Linux 5</title>
		<link>http://blog.dt.org/index.php/2008/11/installing-lighttpd-ruby-on-rails-fastcgi-and-mysql-on-rhel-5/</link>
		<comments>http://blog.dt.org/index.php/2008/11/installing-lighttpd-ruby-on-rails-fastcgi-and-mysql-on-rhel-5/#comments</comments>
		<pubDate>Mon, 24 Nov 2008 00:59:15 +0000</pubDate>
		<dc:creator>dt</dc:creator>
				<category><![CDATA[hacking]]></category>
		<category><![CDATA[lighttpd]]></category>
		<category><![CDATA[ruby on rails]]></category>
		<category><![CDATA[configuration]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[Rails]]></category>
		<category><![CDATA[Ruby]]></category>

		<guid isPermaLink="false">http://blog.dt.org/?p=62</guid>
		<description><![CDATA[
			
				
			
		
Recently, I needed to configure a RedHat Enterprise Linux 5 box with lighttpd, FastCGI, Ruby on Rails, and MySQL. The box was subscribed to RHN, so I assumed a few simple commands like &#8220;sudo yum install lighttpd&#8221;, etc., would do the trick. Imagine my surprise to find that lighttpd, Ruby, gem, and FastCGI were all [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Rails 2, Flex 3, and Form Authenticity Tokens</title>
		<link>http://blog.dt.org/index.php/2008/06/rails-2-flex-3-and-form-authenticity-tokens/</link>
		<comments>http://blog.dt.org/index.php/2008/06/rails-2-flex-3-and-form-authenticity-tokens/#comments</comments>
		<pubDate>Wed, 25 Jun 2008 16:48:31 +0000</pubDate>
		<dc:creator>dt</dc:creator>
				<category><![CDATA[development]]></category>
		<category><![CDATA[hacking]]></category>
		<category><![CDATA[ruby on rails]]></category>
		<category><![CDATA[Flex]]></category>
		<category><![CDATA[Rails]]></category>
		<category><![CDATA[Ruby]]></category>

		<guid isPermaLink="false">http://blog.dt.org/?p=3</guid>
		<description><![CDATA[
			
				
			
		
Recently, I was working with a Ruby on Rails application and I had the need to call a Rails controller method, with some parameters, from a remote Flex client. I would have thought that this would be a simple HTTP GET or POST to the Rails controller/method URL, using a Flex HTTPService object, with a [...]]]></description>
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		<slash:comments>1</slash:comments>
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