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ruby — Ruby programming language interpreter. See also: `gem`, `bundler`, `rake`, `irb`. More information:

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the ruby command: Ruby programming language interpreter. See also: gem, bundler, rake, irb. More information: <https://manned.org/ruby>.

Solution

ruby — Ruby programming language interpreter. See also: gem, bundler, rake, irb. More information: <https://manned.org/ruby>.

Execute a Ruby script:

ruby {{path/to/script.rb}}

Execute a single Ruby command in the command-line:

ruby -e "{{command}}"

Check for syntax errors on a given Ruby script:

ruby -c {{path/to/script.rb}}

Start the built-in HTTP server on port 8080 in the current directory:

ruby -run -e httpd

Locally execute a Ruby binary without installing the required library it depends on:

ruby -I {{path/to/library_folder}} -r {{library_require_name}} {{path/to/bin_folder/bin_name}}

Display version:

ruby {{[-v|--version]}}

Code Snippets

Execute a Ruby script

ruby {{path/to/script.rb}}

Execute a single Ruby command in the command-line

ruby -e "{{command}}"

Check for syntax errors on a given Ruby script

ruby -c {{path/to/script.rb}}

Start the built-in HTTP server on port 8080 in the current directory

ruby -run -e httpd

Locally execute a Ruby binary without installing the required library it depends on

ruby -I {{path/to/library_folder}} -r {{library_require_name}} {{path/to/bin_folder/bin_name}}

Context

tldr-pages: common/ruby

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