-<notextile>
-<pre><code>~$ <span class="userinput">sudo apt-get install libcurl4-openssl-dev</span>
-</code></pre>
-</notextile>
-
-On Red Hat-based systems:
-
-<notextile>
-<pre><code>~$ <span class="userinput">sudo yum install libcurl-devel</span>
-</code></pre>
-</notextile>
-
-Next, install the arvados-cli Ruby gem. If you're using RVM:
-
-<notextile>
-<pre><code>~$ <span class="userinput">sudo /usr/local/rvm/bin/rvm-exec default gem install arvados-cli</span>
-</code></pre>
-</notextile>
-
-If you're not using RVM:
-
-<notextile>
-<pre><code>~$ <span class="userinput">sudo gem install arvados-cli</span>
-</code></pre>
-</notextile>
-
-h2. Install the Python SDK and utilities
+Because it _contains secrets_ shell nodes should *not* have a copy of the complete @config.yml@. For example, if users have access to the @docker@ daemon, it is trival to gain *root* access to any file on the system. Users sharing a shell node should be implicitly trusted, or not given access to Docker. In more secure environments, the admin should allocate a separate VM for each user.