diff --git a/app/assets/javascripts/shell.js b/app/assets/javascripts/shell.js
index 7446a655..1cb6bb57 100644
--- a/app/assets/javascripts/shell.js
+++ b/app/assets/javascripts/shell.js
@@ -1,69 +1,72 @@
-$(document).on('turbolinks:load', function() {
-  var ENTER_KEY_CODE = 13;
+$(document).on('turbolinks:load', function () {
+    var ENTER_KEY_CODE = 13;
 
-  var clearOutput = function() {
-    $('#output').html('');
-  };
+    var clearOutput = function () {
+        $('#output').html('');
+    };
 
-  var executeCommand = function(command) {
-    $.ajax({
-      data: {
-        command: command
-      },
-      method: 'POST',
-      url: $('#shell').data('url')
-    }).done(handleResponse);
-  };
+    var executeCommand = function (command) {
+        $.ajax({
+            data: {
+                command: command
+            },
+            method: 'POST',
+            url: $('#shell').data('url')
+        }).done(handleResponse);
+    };
 
-  var handleKeyPress = function(event) {
-    if (event.which === ENTER_KEY_CODE) {
-      var command = $(this).val();
-      if (command === 'clear') {
-        clearOutput();
-      } else {
-        printCommand(command);
-        executeCommand(command);
-      }
-      $(this).val('');
+    var handleKeyPress = function (event) {
+        if (event.which === ENTER_KEY_CODE) {
+            var command = $(this).val();
+            if (command === 'clear') {
+                clearOutput();
+            } else {
+                printCommand(command);
+                executeCommand(command);
+            }
+            $(this).val('');
+        }
+    };
+
+    var handleResponse = function (response) {
+        if (response.status === 'ok') {
+            printOutput(response);
+        } else if (response.status === 'timeout') {
+            printTimeout(response);
+        }
+    };
+
+    var printCommand = function (command) {
+        $('#output').append('<p><em>' + command + '</em></p>');
+    };
+
+    var printOutput = function (output) {
+        if (output) {
+            var element = $('<p>');
+            if (output.stderr) {
+                element.addClass('text-warning');
+                element.html(output.stderr);
+            } else if (output.stdout) {
+                element.addClass('text-success');
+                element.html(output.stdout);
+            } else {
+                element.addClass('text-muted');
+                element.html($('#output').data('message-no-output'));
+            }
+            $('#output').append(element);
+        }
+    };
+
+    var printTimeout = function (output) {
+        var element = $.append('<p>');
+        element.addClass('text-danger');
+        element.html($('#shell').data('message-timeout'));
+        $('#output').append(element);
+    };
+
+    if ($('#shell').isPresent()) {
+        $('#command').focus();
+        $('#command').on('keypress', handleKeyPress);
     }
-  };
-
-  var handleResponse = function(response) {
-    if (response.status === 'ok') {
-      printOutput(response);
-    } else if (response.status === 'timeout') {
-      printTimeout(response);
-    }
-  };
-
-  var printCommand = function(command) {
-    $('#output').append('<p><em>' + command + '</em></p>');
-  };
-
-  var printOutput = function(output) {
-    var element = $('<p>');
-    if (output.stderr) {
-      element.addClass('text-warning');
-      element.html(output.stderr);
-    } else if (output.stdout) {
-      element.addClass('text-success');
-      element.html(output.stdout);
-    } else {
-      element.addClass('text-muted');
-      element.html($('#output').data('message-no-output'));
-    }
-    $('#output').append(element);
-  };
-
-  var printTimeout = function(output) {
-    var element = $.append('<p>');
-    element.addClass('text-danger');
-    element.html($('#shell').data('message-timeout'));
-    $('#output').append(element);
-  };
-
-  if ($('#shell').isPresent()) {
-    $('#command').focus();
-    $('#command').on('keypress', handleKeyPress);
-  }
-});
+})
+;