Cobra is both a library for creating powerful modern CLI applications as well as a program to generate applications and command files. Cobra is a library providing a simple interface to create powerful modern CLI interfaces similar to git & go tools.
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It provides: 
<ul>
<li>Easy subcommand-based CLIs: <code>app server</code>, <code>app fetch</code>, etc.</li>
<li>Fully POSIX-compliant flags (including short &amp; long versions)</li>
<li>Nested subcommands</li>
<li>Global, local and cascading flags</li>
<li>Easy generation of applications &amp; commands with <code>cobra init appname</code> &amp; <code>cobra add cmdname</code></li>
<li>Intelligent suggestions (<code>app srver</code>... did you mean <code>app server</code>?)</li>
<li>Automatic help generation for commands and flags</li>
<li>Automatic help flag recognition of <code>-h</code>, <code>--help</code>, etc.</li>
<li>Automatically generated bash autocomplete for your application</li>
<li>Automatically generated man pages for your application</li>
<li>Command aliases so you can change things without breaking them</li>
<li>The flexibility to define your own help, usage, etc.</li>
<li>Optional tight integration with <a href="http://github.com/spf13/viper">viper</a> for 12-factor apps</li>
</ul>

Cobra is both a library for creating powerful modern CLI applications as well as a program to generate applications and command files. Cobra is a library providing a simple interface to create powerful modern CLI interfaces similar to git & go tools.

Cobra - A Commander for modern Go CLI interactions

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