tldr/pages/common/ruby.md

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# ruby
> Ruby programming language interpreter.
> More information: <https://www.ruby-lang.org>.
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- Start a REPL (interactive shell):
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`irb`
- Execute a Ruby script:
`ruby {{script.rb}}`
- Execute a single Ruby command in the command-line:
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`ruby -e {{command}}`
- Check for syntax errors on a given Ruby script:
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`ruby -c {{script.rb}}`
- Start the built-in HTTP server on port 8080 in the current directory:
`ruby -run -e httpd`
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- Show the version of Ruby you are using:
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`ruby -v`