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things i've learned more than once

things i've learned more than once
gem mysql install … to ‘failed to build’ on os x
10.29.08 | Permalink | Comment?

If you’re on OS X, and you do this:

dave@home > sudo gem install mysql

And then you get this:

Building native extensions. This could take a while…
ERROR: Error installing mysql:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb install mysql
can’t find header files for ruby.
Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/mysql-2.7 for inspection.
Results logged to /Library/Ruby/Gems/1.8/gems/mysql-2.7/gem_make.out

… it might [...]
things i've learned more than once
dmidecode! … and more fun from the command line
10.15.08 | Permalink | Comment?

dmidecode drops a whole lot of information about the machine you’re on from the command line.
For other information, check out this fine list of command line applications.
Personally, I’ve been a huge fan of tree for a while, too. It shows file structures in an outline, and lets you manipulate them in a variety of ways. [...]
things i've learned more than once
Austin Public Library Lookup Bookmarklet
08.05.08 | Permalink | Comment?

This is one of my favorite geek tricks ever.
Here’s how it goes:

You’re browsing Amazon.
You find a book you want.
You click a bookmarklet in your browser window.
The bookmarklet looks up to see if that book is available at your local public library.
If it is — and you’re in Austin — you can get the book held [...]
things i've learned more than once
rak for file searching
07.16.08 | Permalink | Comment?

I’ve added a new category: “things I’ve learned more than once.”
To inaugurate this category, I give you rak, a nice little directory-level search tool.
Need to find all the times you used a method in a pile of code? Searching desperately for the error alert that says, “This stupid file has been changed?”
There are a fair [...]