Syndication Icon
Published September 27, 2020 Updated October 21, 2021
Rubysmith Icon


Git Badge
Gem Version
Alchemists Style Guide
Circle CI Status

Rubysmith is a command line interface for smithing Ruby projects.

This gem is useful in situations in which you need something more sophisticated than a Bundler Inline script but less complicated than a Gemsmith gem. Rubysmith is the foundation of Gemsmith and provides a lot of the same functionality as Gemsmith but solely tailored for pure Ruby projects. Again, this is a great tool for spiking quick Ruby implementations, sharing code snippets with others, or building full blown Ruby projects for collaboration with others.



  1. A UNIX-based system.

  2. Ruby.

  3. RubyGems.

  4. Bundler.


To install, run:

gem install rubysmith


Command Line Interface (CLI)

From the command line, type: rubysmith --help

  -b, --build NAME [options]               Build new project.
  -c, --config ACTION                      Manage gem configuration: edit or view.
  -h, --help                               Show this message.
  -v, --version                            Show gem version.

  --[no-]amazing_print                 Add Amazing Print gem. Default: true.
  --[no-]bundler-leak                  Add Bundler Leak gem. Default: true.
  --[no-]changes                       Add CHANGES documentation. Default: true.
  --[no-]circle_ci                     Add Circle CI configuration and badge. Default: false.
  --[no-]conduct                       Add CODE_OF_CONDUCT documentation. Default: true.
  --[no-]console                       Add console script. Default: true.
  --[no-]contributions                 Add CONTRIBUTING documentation. Default: true.
  --[no-]debug                         Add Debug gem. Default: true.
  --[no-]git                           Add Git. Default: true.
  --[no-]git_hub                       Add GitHub templates. Default: false.
  --[no-]git-lint                      Add Git Lint gem. Default: true.
  --[no-]guard                         Add Guard gem. Default: true.
  --[no-]license                       Add LICENSE documentation. Default: true.
  --max                                Use maximum/enabled options. Default: false.
  --min                                Use minimum/disabled options. Default: false.
  --[no-]rake                          Add Rake gem. Default: true.
  --[no-]readme                        Add README documentation. Default: true.
  --[no-]reek                          Add Reek gem. Default: true.
  --[no-]refinements                   Add Refinements gem. Default: true.
  --[no-]rspec                         Add RSpec gem. Default: true.
  --[no-]rubocop                       Add Rubocop gems. Default: true.
  --[no-]setup                         Add setup script. Default: true.
  --[no-]simple_cov                    Add SimpleCov gem. Default: true.
  --[no-]zeitwerk                      Add Zeitwerk gem. Default: true.


The core functionality of this gem centers around the --build command with optional customization provided via build options. By default, all build options are enabled. Example:

rubysmith --build demo

Running the above will generate a new demo Ruby project with all options enabled. Should you wish to disable specific options, you can use the --no-* prefix. Example:

rubysmith --build demo --no-debug --no-guard

With the above example, both Debug and Guard support would have been disabled when building the demo project. Taking this a step further, you can also use the --min option to generate a project with bare minimum of options. Example:

rubysmith --build demo --min

The above is essentially the same as building with all options disabled. This is handy in situations where you need to quickly script something up for sharing with others yet still want to avoid using a Bundler Inline script so gem dependencies are not installed each time the code is run.

As shown earlier, you can combine options but be aware that order matters. Take the following, for example, where both minimum and maximum options are used in conjunction with other options:

rubysmith --build demo --min --zeitwerk
rubysmith --build demo --max --no-debug

With the above examples, the first line will disable all options except for Zeitwerk while the second line will enable all options except for Debug. This can be a handy way to build a new project with all options either disabled or enabled with only a few select options modified. To have specific options enabled/disabled every time you build a new Ruby project, you can edit your global configuration for making these settings permanent (see below for details).


This gem can be configured via a global configuration:


It can also be configured via XDG environment variables. The default configuration is as follows:

  :amazing_print: true
  :bundler_leak: true
  :changes: true
  :circle_ci: false
  :conduct: true
  :console: true
  :contributions: true
  :debug: true
  :git: true
  :git_hub: false
  :git_lint: true
  :guard: true
  :license: true
  :maximum: false
  :minimum: false
  :rake: true
  :readme: true
  :reek: true
  :refinements: true
  :rspec: true
  :rubocop: true
  :setup: true
  :simple_cov: true
  :zeitwerk: true
      - "# frozen_string_literal: true"
      - "**/*.rb"
      - "**/*bin/console"
      - "**/*bin/guard"
      - "**/*bin/rubocop"
      - "**/*Gemfile"
      - "**/*Guardfile"
      - "**/*Rakefile"
  :format: "md"
  :license: "mit"

Feel free to take this default configuration, modify, and save as your own custom configuration.yml.


Author information is used when generating project documentation and is recommended you fill this information in before building a project. Example:

  :name: Jill Smith


Build options are booleans so can only be true or false by default. Should you want a different configuration than what is enabled/disabled by default, you’ll want to customize these options as you see fit. When changing build options, they will dynamically show up when viewing usage (i.e. rubysmith --help).


Builders are additional tooling which can be configured specifically for Rubysmith. At the moment, only Pragmater is supported so view the Pragmater project page to learn more.


Documentation can be configured as follows:

  • Format: Use md for Markdown or adoc for ASCCI Doc.

  • License: Use mit for MIT or Apache for Apache 2.0.0 license.

No other licenses are supported at this time but might be expanded up on in the future.


Your GitHub user is whatever handle you setup when you creating your GitHub account. This information is used for documentation purposes and Circle CI badge association. If you don’t define this information, Rubysmith will automatically fallback to pulling this information from your Git configuration (i.e. github.user). If all else fails, then nothing will be used.


To contribute, run:

git clone
cd rubysmith

You can also use the IRB console for direct access to all objects:



To test, run:

bundle exec rake


Read Semantic Versioning for details. Briefly, it means:

  • Major (X.y.z) - Incremented for any backwards incompatible public API changes.

  • Minor (x.Y.z) - Incremented for new, backwards compatible, public API enhancements/fixes.

  • Patch (x.y.Z) - Incremented for small, backwards compatible, bug fixes.

Code of Conduct

Read Code of Conduct for details.


Read Contributions for details.


Read License for details.


Read Changes for details.


Engineered by Brooke Kuhlmann.