title: Install mongo shell in mac
body: <p>i wanted to install only <code>mongo-shell</code> in my mac</p>
  
  <p>i ran <code>brew update</code> and then i ran <code>brew install mongodb-org-shell</code> .. But it is not getting installed. Below is the error message</p>
  
  <pre class="lang-sh prettyprint-override"><code>
  bash-3.2$ brew install mongodb-org-shell 
  Error: No available formula with the name "mongodb-org-shell" 
  ==&gt; Searching for a previously deleted formula (in the last month)...
  Warning: homebrew/core is shallow clone. To get complete history run:
    git -C "$(brew --repo homebrew/core)" fetch --unshallow
  
  Error: No previously deleted formula found.
  ==&gt; Searching for similarly named formulae...
  Error: No similarly named formulae found.
  ==&gt; Searching taps...
  ==&gt; Searching taps on GitHub...
  Error: No formulae found in taps.
  bash-3.2$ 
  </code></pre>