'which' command outputs nothing in Ubuntu : <p>I want to figure out path of the executable command, but <code>which</code> says nothing. Why ? So and when it's usual case for <code>which</code>to return nothing about command's path. path is hidden/inaccessible for some types of executables or ...</p>

<pre><code>which sdk
</code></pre>

<p>sdk - it's <a href="https://sdkman.io/" rel="nofollow noreferrer">SDKMAN</a></p>
