title: heroku run bash is not working
body: <p>Why is <strong>heroku run bash</strong> not working?</p>
  
  <p>$ <strong>heroku login</strong></p>
  
  <pre><code>Enter your Heroku credentials.
  Email: xx@yy.zz
  Password (typing will be hidden): 
  Logged in as xx@yy.zz
  </code></pre>
  
  <p>$ <strong>heroku run bash</strong></p>
  
  <pre><code> ▸    No app specified.
   ▸    Run this command from an app folder or specify which app to use with --app APP
  </code></pre>
  
  <p>$ <strong>heroku run --app bash</strong></p>
  
  <pre><code> ▸    Usage: heroku run COMMAND
   ▸    
   ▸    Example: heroku run bash
  </code></pre>
  
  <p>$ <strong>heroku run "ls /usr/bin/"</strong></p>
  
  <pre><code> ▸    No app specified.
   ▸    Run this command from an app folder or specify which app to use with --app APP
  </code></pre>
  
  <p>$ <strong>heroku run --app "ls /usr/bin/"</strong></p>
  
  <pre><code> ▸    Usage: heroku run COMMAND
   ▸    
   ▸    Example: heroku run bash
  </code></pre>
  
  <p>$ <strong>heroku version</strong></p>
  
  <pre><code>heroku-toolbelt/3.42.22 (universal.x86_64-darwin15) ruby/2.0.0
  heroku-cli/4.27.11-7569c5d (amd64-darwin) go1.5.2
  === Installed Plugins
  heroku-apps@1.1.0
  heroku-cli-addons@0.1.1
  heroku-fork@4.0.0
  heroku-git@2.4.4
  heroku-local@4.1.5
  heroku-run@2.9.2
  heroku-spaces@2.0.9
  heroku-status@1.2.4
  </code></pre>