Running Scripts
A Ruby script is a saved file of instructions that you run with one command. It is like playing a recipe from start to finish.
In this page:
Syntax
ruby script_name.rbRunning Scripts
A Ruby script is run with ruby filename.rb from the command line, executing every statement top to bottom. This is the standard way to run a complete Ruby program, as opposed to experimenting interactively in IRB.
The .rb extension is a convention, not a strict requirement.
Note:
ruby -c filename.rb checks a script's syntax without actually running it.Example: Running Scripts
# Run a Ruby script from the command line
ruby hello.rb
# Check syntax without running it
ruby -c hello.rb⚠️ Run this in your own terminal or Node.js environment.
Related Topics
{# common_mistakes/chapter_summary/browser_support: on Hindi pages the
view already swaps in the hi_ translation fields (or blanks these
out if untranslated), so this renders correctly for both languages
without a lang_code check here. #}
Common Mistakes
- Running
ruby hellowithout.rbwhen the file is namedhello.rb, so Ruby cannot find it. - Running the command from a different folder, so Ruby reports
No such file or directory. - Forgetting that
ruby -c hello.rbonly checks syntax and does not run the code.
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