cpulimit is a simple program which attempts to limit the cpu usage of a process (expressed in percentage, not in...

I've recently encountered a weird problem with specs making lots of SOLR queries using the acts_as_solr plugin...

Here are some popular mistakes when using nested forms: You are using fields_for instead of form.fields_for.

If you need to parse a large XML file (> 20 MB or so), you should parse it in chunks, otherwise...

After managing a few agile projects from India and learning the tricks of the trade, I have been wondering why...

These steps are now part of Spreewald. Since Capybara 0.4.1 a within scope will only look at the first element...

You can say: $(element).is(':visible') and $(element).is(':hidden') jQuery considers an element to be visible if it...

We're adding a script console-for to open a remote Rails console with one command. Also have a look...

The step definition below allows you to write: Then I should see a link labeled "Foo" But I should not...

A common question in IT departments is whether to provide a capability by building custom software or by buying a...

When you render a nested form for a Movie which has_many :actors, you want to render the right number...

To test if you can connect to a host using password authentication and explicitly deny public key authentication:

Here is how to switch your Selenium to Chrome: Make sure you've got a recent version of chromedriver in...

If you stub a method or set expectations with should_receive these stubbed methods may also yield blocks. This is...

In order to rename your Ubuntu box, replace all occurences of the the old name in the following two files...

In shell scripts you can use $1 to refer to the first argument, $2 for the second, etc. If you...

Ever wondered if there is a reverse for Rails' .each(&:to_s) idiom? Turns out there is... You probably already...

This is somewhat similar to the touch command of Linux: FileUtils.touch 'example.txt', :mtime => Time.now - 2.hours If you omit the :mtime...

To obtain a list of Passenger processes with their application directories and memory usages, you can say sudo passenger-memory...

When some of your Google contacts are no longer synchronized with your e-mail client or mobile phone, those contacts...

Sometimes, when running a rake task, RubyGems 1.8.5 raises an error: rake aborted! undefined method `specifications' for "/usr/lib/ruby/gems/1.8":String

If you have to build a filename (e.g. for use in downloads) that contains user input, keep in mind that...

My RubyMine (and it seems like many other Java GUI applications) crashes the Compiz window decorator almost every time on...

When you encouter an unsafe string that you actually made html_safe before, perhaps you called one of the following...