Today I needed to execute a ruby gem executable with sudo. But, surprisingly, bash would tell me command not found...
Before installing chef, make sure curl is installed and sudo finds your gems setup chef-client: follow this guide
We regularly need to connect to the server in order to e.g. access the production console. Guessing the Capistrano deploy...
When you simply want to get to know Puppet, follow puppetlabs’ Learning Puppet Docs. They give you a handy introduction...
Although regular expression syntax is 99% interchangeable between languages, keep this in mind: By default, the dot character (".") does not...
We recently decided to put static content for HouseTrip.com to Amazon Cloudfront for a faster user experience. This happens fully...
You know that you can collect an array as groups using in_groups or in_groups_of. Maybe you want...
Run rspec-and-cucumber from any project directory to run both RSpec and Cucumber. If available, rspec_spinner or cucumber...
Whenever is a Ruby gem that provides a clear syntax for writing and deploying cron jobs.
Validations that need to access an associated object may lead to some trouble. Let's exemplify that using this example...
Ruby comes with a class BigDecimal which you can use for arbitrary precision arithmetic. You should use BigDecimal instead of...
When storing floating-point numbers such as prices or totals in an SQL database, always use a DECIMAL column. Never...
Sass now comes with user-defined functions, keyword arguments, list manipulation. Haml and Sass are now two separate gems.
The Edge Rider gem will define a method collect_ids on your ActiveRecord models, scopes, integer scalars and collections, which...
A capybara driver that uses WebKit via QtWebKit.
Our new scope-based authorization gem for Ruby on Rails has been released. This might one day replace Aegis as...
Documentation for the horrible RDoc syntax.
If you want to convert a README.rdoc file to HTML, say this from a shell: rdoc README.rdoc
Ruby gem to check whether a given bic/account-no-combination can possibly be valid for a German bank. Can also resolve German...
If you are using RVM on a Mac and cannot enter 8+ bit characters on an IRB or Rails console...
Reading a URL via GET: curl http://example.com/ Defining any HTTP method (like POST or PUT): curl http://example.com/users/1...
User.active.to_sql Rails 2 Use either the Edge Rider or fake_arel gem to get #to_sql backported...
Since version 1.5 RubyGems requires at least Ruby 1.8.7. The last one working with Ruby 1.8.6 was RubyGems 1.4.2.
When installing RMagick you may get an error messages like this: Version 2.13.1: checking for Ruby version >= 1.8.5... yes