--- /dev/null
+<?php
+
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\user\Entity\User;
+
+// @see https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Field%21Annotation%21FieldType.php/class/annotations/FieldType/8.2.x
+create_field('field_user_email', 'email', 'user','user');
+create_field('field_user_string', 'string', 'user','user');
+create_field('field_user_string_long', 'string_long', 'user','user');
+create_field('field_user_telephone', 'telephone', 'user','user');
+create_field('field_user_text', 'text', 'user','user');
+create_field('field_user_text_long', 'text_long', 'user','user');
+create_field('field_user_text_with_summary', 'text_with_summary', 'user','user');
+
+// @todo Find a Symfony-ish way to get arguments.
+$args = drush_get_arguments();
+
+// Create a user.
+$values = [
+ 'field_user_email' => 'joe.user.alt@myhome.com',
+ 'field_user_string' => 'Private info',
+ 'field_user_string_long' => 'Really private info',
+ 'field_user_telephone' => '4104442222',
+ 'field_user_text' => 'Super private info',
+ 'field_user_text_long' => 'Super duper private info',
+ 'field_user_text_with_summary' => 'Private',
+];
+
+$user = User::create([
+ 'name' => $args[2],
+ 'mail' => $args[3],
+ 'pass' => 'password',
+]);
+
+foreach ($values as $field_name => $value) {
+ $user->set($field_name, $value);
+}
+
+$return = $user->save();
+
+/**
+ * Create a field on an entity.
+ *
+ * @param string $field_name
+ * The name of the field.
+ * @param string $field_type
+ * The field type.
+ * @param string $entity_type
+ * The entity type. E.g., user.
+ * @param $bundle
+ * The entity bundle. E.g., article.
+ */
+function create_field($field_name, $field_type, $entity_type, $bundle) {
+ $field_storage = FieldStorageConfig::create(array(
+ 'field_name' => $field_name,
+ 'entity_type' => $entity_type,
+ 'type' => $field_type,
+ ));
+ $field_storage->save();
+ FieldConfig::create([
+ 'field_storage' => $field_storage,
+ 'bundle' => $bundle,
+ 'label' => $field_name,
+ 'settings' => [],
+ ])->save();
+}