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Engineering & Code

This category consolidates various technical fields to include: Computer, Electrical Engineering, Engineering, Computer Security, and Physics.

Hard drive mirroring With Unison and the DNS-323

My requirements: – All files on my laptop will be on my DNS-323 Network attached storage device – Any changes made to the shared drive on the DNS-323 will propagate to my Mac – This happens securely and safely The problem is that there are scant resources online to do this. (Isn’t this done frequently?) […] read more

Convert avi’s, mkv etc to the iphone

Handbrake is amazing with active development and a great community. When I wanted to transfer a bunch of lectures to iphone/ipod touch format, I faced the time-consuming challenge of converting a hundred files using the Handbrake gui and figuring out the complicated set of options for HandbrakeCLI — their nightly build standalone. So, here is […] read more

Recovering Rails Data Using Production.log

So you didn’t set up automatic backups and need to recover your data? Don’t try digging it out of mysql, look no further than your rails production log. OK, try a bit with mysql, because the rails production log is a terrible way to recover your data. Only use as a last resort, but when […] read more

Paperless Archive Makeover — ruby and unix to the rescue

I recently had to clean out my digital paperless archive — a task made much more difficult by encrypted PDFs and a bunch of lint in my directory. We have been paperless since 2001 and have many gigs of files in a hierarchical file structure that was becoming difficult to use and maintain. (i.e. Where […] read more

Thought piece on the mischaracterization of static radars

How is risk factored? Pr{Detect}? Essential Question: How bad of a mis-characterization is this? What specific scenarios create the greatest mis-characterization? What happens as you lengthen orbit? How much does directionality matter? How do speed and the various RF parameters matter? read more

getting git-svn up and running on ubuntu

tim@polycarp:~/web_apps$ git svn clone http://svn.fitwit.com Can't locate SVN/Core.pm in @INC (@INC contains: /usr/local/share/perl/5.10.0 /etc/perl /usr/local/lib/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl .) at /usr/local/libexec/git-core//git-svn line 29. so i realized i needed to install the perl git-svn libraries: sudo apt-get install git-core git-svn did the trick. enjoy. read more

Generating PDF files with RTeX

I love LaTeX and I love ruby/rails. I want to use rtex, it seems perfect for me. But, I am having trouble and am looking for help — once i get this working i’ll make a blog post for the world. First, do i have what it takes? tim@polycarp:~/test_rails$ which pdflatex /usr/bin/pdflatex tim@polycarp:~/test_rails$ which latex […] read more

Dragon Naturally Speaking on Windows 2008 Server

Recently, I purchased the upgrade to Dragon Naturally Speaking 10 for Windows and experienced some difficulty installing the software. Officially, the web-site lists the following supported versions: Windows Server 2000 Windows Server 2003 Windows XP SP2 or higher, 32-bit Windows 2000 SP4 or higher Windows Vistaâ„¢ or Windows Vistaâ„¢ SP1, 32-bit 64-bit OS not currently […] read more

Setting up my Radiant Blog

I just started setting up my personal Blog after forays into WordPress and Mephisto I have settled on Radiant. Radiant is a very flexible system with lots of development. The folks in #radiantcms are extremely helpful and the entire site is in ruby and uses the rails construct. How did I set up GIT? Which […] read more