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 [...]
Smashing Magazine rounds up a bunch of Web 2.0 ideas, and it makes for an occasionally frustrating browse.
Still. Pretty neat, pretty cool.
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. [...]