It sets up a fifo, and passes in one end of it by name:<p><pre><code>    $ echo &lt;(:) &lt;(:)
    &#x2F;dev&#x2F;fd&#x2F;63 &#x2F;dev&#x2F;fd&#x2F;62
</code></pre>
So yeah, should be what you want for that use case :)<p>As I mentioned though, it&#x27;s a bashism.