title: Conda environment package missing in Jupyter with interactive shell
body: <p>I have installed a package in an environment on my system using the following two commands:</p>
  <pre><code>&gt;&gt;&gt; conda activate pytorch_p36
  &gt;&gt;&gt; conda install tensorboard
  </code></pre>
  <p>We can see what an expected output looks like, which is the following:</p>
  <pre><code>&gt;&gt;&gt; tensorboard --version
  TensorFlow installation not found - running with reduced feature set.
  2.3.0
  </code></pre>
  <p>Now, I  open Jupyter Notebook and specify the pytorch_p36 kernel. All relevant packages are recognized when importing modules. However, I do not see what I expected in interactive shell. For example, the following code in Jupyter Notebook:</p>
  <pre><code>!tensorboard --version
  </code></pre>
  <p>Returns the following unexpected output:</p>
  <pre><code>/usr/bin/sh: 1: tensorboard: not found
  </code></pre>
  <p>Even though I am in the environment kernel, how do I execute in the same environment with interactive shell?</p>