https://yegorov.github.io/tags/cli/ Recent content in CLI on Artem Yegorov Hugo en Thu, 24 Sep 2026 08:31:46 +0000 https://yegorov.github.io/notes/use-optionparser-in-ruby/ Thu, 24 Sep 2026 08:31:46 +0000 https://yegorov.github.io/notes/use-optionparser-in-ruby/ <p>If you need to build a command-line tool with flag parsing and can&rsquo;t decide on the right ecosystem, give Ruby a look. You don&rsquo;t even need to pull in third-party gems to get started - <a href="https://docs.ruby-lang.org/en/master/OptionParser.html" class="external-link" target="_blank" rel="noopener">OptionParser</a> is built right into the standard library. All it takes is defining your help message and declaring your flags with its expressive block syntax. Take a look at the snippet above - it&rsquo;s remarkable how clean and readable CLI flag declarations look using <a href="https://docs.ruby-lang.org/en/master/optparse/tutorial_rdoc.html" class="external-link" target="_blank" rel="noopener">OptionParser&rsquo;s DSL</a>.</p>