A high-level IO library that provides validation, type conversion, and more for command-line interfaces. HighLine also includes a complete menu system that can crank out anything from simple list selection to complete shells with just minutes of work.

A DSL for gathering options and parsing command line flags

Optimist is a commandline option parser for Ruby that just gets out of your way. One line of code per option is all you need to write. For that, you get a nice automatically-generated help page, robust option parsing, command subcompletion, and sensible defaults for everything you don't specify.

The complete solution for Ruby command-line executables. Commander bridges the gap between other terminal related libraries you know and love (OptionParser, HighLine), while providing many new features, and an elegant API.

Build command-suite CLI apps that are awesome. Bootstrap your app, add commands, options and documentation while maintaining a well-tested idiomatic command-line app

A simple mixin for CLI interfaces, including option parsing

Trollop is a commandline option parser for Ruby that just gets out of your way. **DEPRECATION** This gem has been renamed to optimist and will no longer be supported. Please switch to optimist as soon as possible.

Run shell commands safely, even with user-supplied values

Clamp provides an object-model for command-line utilities. It handles parsing of command-line options, and generation of usage help.

Choice is a simple little gem for easily defining and parsing command line options with a friendly DSL.

Common framework to build command line interfaces with Ruby

Cri allows building easy-to-use command-line interfaces with support for subcommands.

Isn't it awesome how `optparse` and other option parsers generate help and usage-messages based on your code?! Hell no! You know what's awesome? It's when the option parser *is* generated based on the help and usage-message that you write in a docstring! That's what docopt does!

Methadone provides a lot of small but useful features for developing a command-line app, including an opinionated bootstrapping process, some helpful cucumber steps, and some classes to bridge logging and output into a simple, unified, interface

cmdparse provides classes for parsing (possibly nested) commands on the command line; command line options themselves are parsed using optparse.

OptparsePlus provides a lot of small but useful features for developing a command-line app, including an opinionated bootstrapping process, some helpful integration test support, and some classes to bridge logging and output into a simple, unified, interface

A flexible command line option parser.

Writing even complex command-line apps should be quick, easy and fun. Escort takes the excellent Trollop option parser and adds a whole bunch of awesome features to produce a library you will always want to turn to when a 'quick script' is in order.

A modular Ruby toolkit for building clean, correct, and robust CLI commands as plain-old Ruby classes.

Clap is a small library that can be bundled with your command line application. It covers the simple case of executing code based on the flags or parameters passed.

Samovar is a flexible option parser excellent support for sub-commands and help documentation.

OptionParser based CLI support for rapid CLI development in an object-oriented context. This library wraps Ruby's OptionParser for parsing your options under the hood, so you get all the goodness that the Ruby standard library provides. On top of that it adds a rich and powerful DSL for definin...

Parser for command line arguments, keywords, flags, options and environment variables.

Command-line arguments to hash

Command Line Interface gem allows you to quickly specify command argument parser that will automatically generate usage, handle stdin, switches, options and arguments with default values and value casting

This is an lightweight option parser, which is less than 80 lines short. It has strong validations and a short, clear and easy to use syntax. Feel free to copy all 80 lines (55 lines without validations / empty lines) into your script rather installing the gem.

Subcommand and alias facility (wrapping OptionParser) for command line programs with elegant help printing

The getopt library provides two different command line option parsers. They are meant as easier and more convenient replacements for the command line parsers that ship as part of the Ruby standard library. Please see the README for additional comments.

A framework for building command-line applications

command line argument parser

Command-line option parser and command interface.

Command-line input parser that doesn't hate you

Quickl helps you creating commandline ruby programs. From simple commands with options to complex delegators with subcommands, global and local options.

Sensible options parsing

docopt completion generator

Parameter specification, validity checking and argument transformations can be put in one place, default parameters are easily set, and an automatic usage statement is constructed.

It's just here to handle arguments provided to Application. Mainly optional via switches. Currently handles plain-text Console arguments.

Just write the help text for your application and ParseArgv will take care of your command line. It works sort of the other way around than OptParse, where you write a lot of code to get a command line parser and generated help text. ParseArgv simply takes your help text and parses the command li...

Yet another options parser. Parses the command-line arguments and parameters. Simple, lightweight with nice DSL declarative approach.

Embedded commands for Command-Line-Interfaces

Provides a convenient interface around optparse.

Parse command-line options into a configuration hash

A domain specific language for creating composable command line interfaces.

Como provides low manifest command line option parsing and deployment. The command line options are described in compact table format and option values are stored to conveniently named properties. Como builds command usage information based on the option table (+ generic program info) and display...

Brigadier is a DSL that provides the ability to create complex command line tools with support for - sub commands, arguments, options and toggles

ArgParser is a simple, yet powerful command-line argument parser, with support for positional, keyword, flag and rest arguments, any of which may be optional or mandatory.

Yet another command line option parser in Ruby, based on Perl's Getopt::Long module.

Extension Command for Dry::CLI which generates a completion script for bash/zsh.