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Scriptster is a small Ruby gem that will help you write scripts in Ruby. It only consists of two functions and it's especially useful for apps which depend on many external tools.

Example output

This library focuses on these two basic things:

  • Running shell commands
  • Providing nice logs and status messages about what happened

See the examples bellow.


require 'scriptster'

It's not necessary to configure scriptster before using it, if you're happy with the default settings. But chances are you won't be, in which case the configure method is exactly what you're after. Bellow is a quick example (for the full list of options, please refer to the docs):

Scriptster::configure do |conf| = "my-script"
  conf.verbosity = :verbose
  conf.file = nil
  conf.colours = :dark
  conf.log_format = "%{timestamp} %{name} %{type} %{message}"

The following snippet demonstrates how can you use scriptster in practice:

Scriptster::log :info, "Checking branches"

git_cmd = Scriptster::cmd "git branch",
  :show_out = true,
  :show_err = true

branch_exists = git_cmd.out.split("\n").grep(/#{branch}/).length > 0
Scriptster::log(:warn, "Branch '#{branch}' not found") unless branch_exists

The first log method will format and print a status message to stdout. The latter cmd method executes the given git command, prints it's output, but it also keeps it for processing. You will find more about the options and parameters of these functions in the documentation.


Add this line to your application's Gemfile:

gem 'scriptster'

And then execute:

$ bundle

Or install it yourself as:

$ gem install scriptster


  1. Fork it ([my-github-username]/scriptster/fork )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request