Is there a way to add a yarn something command to yarn globally?

[Shayan-To]

I have a yarn-related script that I want to use from everywhere. Is there a way to add a yarn something command to yarn so I can call my script from anywhere? For example in git, if you add some git-something executable to somewhere in your path, git will recognize it and it will be available as git something. But with yarn I only found project-local plugins, no global ones.