title: Where is the `sdk` command installed for sdkman
body: <p>I just installed <a href="http://sdkman.io/" rel="nofollow noreferrer">sdkman</a> for installing grails on my machine (MacOS). When I run <code>which sdk</code> command I don't get any output. But when I run the <code>sdk help</code> command the shell is able to resolve it and give the right output. I checked all the directories mentioned in $PATH environment variable but I could not find any executable <code>sdk</code>. So my question is how is shell able to resolve the <code>sdk</code> command?</p>
  <p>Note: I also checked in Ubuntu and I see the same behavior.</p>
  <p><a href="https://i.stack.imgur.com/0o6jb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0o6jb.png" alt="enter image description here" /></a>
  <a href="https://i.stack.imgur.com/dYJiv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dYJiv.png" alt="enter image description here" /></a></p>