diff --git a/README.md b/README.md
index bc58be0..c6c90fe 100644
--- a/README.md
+++ b/README.md
@@ -176,6 +176,25 @@ Pull requests should be made to the **develop** branch.
 - Source code: https://github.com/ixis/codeception-module-drupal-user-registry
 
 
+## Creating or deleting users using the command line
+
+Once this module is installed in a Codeception test suite the following commands can be used to create and delete test users (from the root of the test suite):
+
+    # Create test users for all defined roles.
+    vendor/bin/drupal-user-registry users:create
+
+    # Delete test users for all defined roles.
+    vendor/bin/drupal-user-registry users:delete
+
+These commands will default to using the **acceptance** suite to determine the alias on which Drush will run from the suite's configuration. To run the commands using a suite other than **acceptance**, pass the suite name as an argument:
+
+    # Create test users for all defined roles in the front-end suite configuration.
+    vendor/bin/drupal-user-registry users:create front-end
+
+    # Delete test users for all defined roles in the front-end suite configuration.
+    vendor/bin/drupal-user-registry users:delete front-end
+
+
 ## Acknowledgements
 
 Thanks to [Andy Rigby](https://github.com/ixisandyr) for the storage code and inspiration.
diff --git a/bin/drupal-user-registry b/bin/drupal-user-registry
new file mode 100755
index 0000000..3465603
--- /dev/null
+++ b/bin/drupal-user-registry
@@ -0,0 +1,13 @@
+#!/usr/bin/env php
+<?php
+
+require_once dirname(__FILE__) . '/../vendor/autoload.php';
+
+use Codeception\Module\Drupal\UserRegistry\Command\CreateTestUsersCommand;
+use Codeception\Module\Drupal\UserRegistry\Command\DeleteTestUsersCommand;
+use Symfony\Component\Console\Application;
+
+$app = new Application();
+$app->add(new CreateTestUsersCommand());
+$app->add(new DeleteTestUsersCommand());
+$app->run();
diff --git a/composer.json b/composer.json
index f15c70d..8d8f8f9 100644
--- a/composer.json
+++ b/composer.json
@@ -31,5 +31,7 @@
         "psr-4": {
             "Codeception\\Module\\": "src"
         }
-    }
+    },
+
+    "bin": ["bin/drupal-user-registry"]
 }
diff --git a/src/Drupal/UserRegistry/Command/CreateTestUsersCommand.php b/src/Drupal/UserRegistry/Command/CreateTestUsersCommand.php
new file mode 100644
index 0000000..f39aafe
--- /dev/null
+++ b/src/Drupal/UserRegistry/Command/CreateTestUsersCommand.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace Codeception\Module\Drupal\UserRegistry\Command;
+
+use Codeception\Exception\Module as ModuleException;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Class CreateTestUsersCommand.
+ *
+ * @package Codeception\Module\DrupalUserRegistry\Command\TestUsersCommand
+ */
+class CreateTestUsersCommand extends Command
+{
+    use TestUsersCommandTrait;
+
+    /**
+     * Configuration for this command.
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('users:create')
+            ->setDescription('Create test users.')
+            ->addArgument(
+                'suite',
+                InputArgument::OPTIONAL,
+                "Which suite configuration to use. Defaults to 'acceptance'."
+            );
+    }
+
+    /**
+     * Execute command: create any defined test users on the configured Drush alias.
+     *
+     * @todo Codeception debug calls won't work here.
+     *
+     * @param InputInterface $input
+     *   The command input.
+     *
+     * @param OutputInterface $output
+     *   The command output.
+     *
+     * @return int|null|void
+     *
+     * @throws ModuleException
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        // The suite name can be passed as an argument. Without it, the command defaults to 'acceptance'.
+        $suiteName = $input->getArgument('suite');
+        if (!$suiteName) {
+            $suiteName = 'acceptance';
+        }
+
+        $this->getTestUsers($suiteName);
+        $this->testUserManager->createUsers($this->users);
+    }
+}
diff --git a/src/Drupal/UserRegistry/Command/DeleteTestUsersCommand.php b/src/Drupal/UserRegistry/Command/DeleteTestUsersCommand.php
new file mode 100644
index 0000000..076b9d3
--- /dev/null
+++ b/src/Drupal/UserRegistry/Command/DeleteTestUsersCommand.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace Codeception\Module\Drupal\UserRegistry\Command;
+
+use Codeception\Exception\Module as ModuleException;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Class DeleteTestUsersCommand.
+ *
+ * @package Codeception\Module\Drupal\UserRegistry\Command
+ */
+class DeleteTestUsersCommand extends Command
+{
+    use TestUsersCommandTrait;
+
+    /**
+     * Configuration for this command.
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('users:delete')
+            ->setDescription('Delete test users.')
+            ->addArgument(
+                'suite',
+                InputArgument::OPTIONAL,
+                "Which suite configuration to use. Defaults to 'acceptance'."
+            );
+    }
+
+    /**
+     * Execute command: create any defined test users on the configured Drush alias.
+     *
+     * @todo Codeception debug calls won't work here.
+     *
+     * @param InputInterface $input
+     *   The command input.
+     *
+     * @param OutputInterface $output
+     *   The command output.
+     *
+     * @return int|null|void
+     *
+     * @throws ModuleException
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        // The suite name can be passed as an argument. Without it, the command defaults to 'acceptance'.
+        $suiteName = $input->getArgument('suite');
+        if (!$suiteName) {
+            $suiteName = 'acceptance';
+        }
+
+        $this->getTestUsers($suiteName);
+        $this->testUserManager->deleteUsers($this->users);
+    }
+}
diff --git a/src/Drupal/UserRegistry/Command/TestUsersCommandTrait.php b/src/Drupal/UserRegistry/Command/TestUsersCommandTrait.php
new file mode 100644
index 0000000..d3e4f67
--- /dev/null
+++ b/src/Drupal/UserRegistry/Command/TestUsersCommandTrait.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace Codeception\Module\Drupal\UserRegistry\Command;
+
+use Codeception\Configuration;
+use Codeception\Exception\Module as ModuleException;
+use Codeception\Module\Drupal\UserRegistry\DrushTestUserManager;
+use Codeception\Module\Drupal\UserRegistry\Storage\ModuleConfigStorage;
+
+/**
+ * Class TestUsersCommandTrait.
+ *
+ * @package Codeception\Module\Drupal\UserRegistry\Command
+ */
+trait TestUsersCommandTrait
+{
+    /**
+     * @var \Codeception\Module\Drupal\UserRegistry\DrupalTestUser[]
+     *   Store an array of test users to be created or deleted.
+     */
+    protected $users;
+
+    /**
+     * @var \Codeception\Module\Drupal\UserRegistry\TestUserManagerInterface
+     *   Store the test user manager being used to create or delete users.
+     */
+    protected $testUserManager;
+
+    /**
+     * @param string $suiteName
+     * @param array $suiteSettings
+     *
+     * @throws ModuleException
+     * @throws \Codeception\Exception\Configuration
+     * @throws \Exception
+     */
+    protected function getTestUsers($suiteName, $suiteSettings = null)
+    {
+        if (!$suiteSettings) {
+            $suiteSettings = Configuration::suiteSettings($suiteName, Configuration::config());
+        }
+
+        if (!isset($suiteSettings['modules']['config']['DrupalUserRegistry'])) {
+            throw new ModuleException(
+                __CLASS__,
+                sprintf("Drupal User Registry is not configured correctly in suite '%s'.", $suiteName)
+            );
+        }
+
+        $config = $suiteSettings['modules']['config']['DrupalUserRegistry'];
+
+        $moduleConfigStorage = new ModuleConfigStorage($config);
+        $this->users = $moduleConfigStorage->load();
+        $this->testUserManager = new DrushTestUserManager($config, $moduleConfigStorage);
+    }
+}
diff --git a/tests/_support/FunctionalHelper.php b/tests/_support/FunctionalHelper.php
index a69bccb..9cab964 100644
--- a/tests/_support/FunctionalHelper.php
+++ b/tests/_support/FunctionalHelper.php
@@ -2,6 +2,8 @@
 
 namespace Codeception\Module;
 
+use Codeception\Module\Drupal\UserRegistry\Storage\ModuleConfigStorage;
+
 /**
  * Define custom actions for functional tests.
  *
@@ -9,4 +11,21 @@
  */
 class FunctionalHelper extends \Codeception\Module
 {
+    /**
+     * Helper to translate role names to test usernames.
+     *
+     * @todo This code is copied from ModuleConfigStorage::load(), where it's a bit buried. Needs refactoring.
+     *
+     * @see ModuleConfigStorage::load()
+     *
+     * @param string $role
+     *   The name of the role to translate into a test username.
+     *
+     * @return string
+     */
+    public function getTestUsername($role)
+    {
+        $roleNameSuffix = preg_replace(ModuleConfigStorage::DRUPAL_ROLE_TO_USERNAME_PATTERN, ".", $role);
+        return ModuleConfigStorage::DRUPAL_USERNAME_PREFIX . "." . $roleNameSuffix;
+    }
 }
diff --git a/tests/functional.suite.yml b/tests/functional.suite.yml
index fe34ac5..820037e 100644
--- a/tests/functional.suite.yml
+++ b/tests/functional.suite.yml
@@ -3,7 +3,32 @@
 #
 class_name: FunctionalTester
 modules:
-    enabled: [Db, FunctionalHelper]
+    enabled: [Asserts, Db, FunctionalHelper]
+    config:
+        # Used for command line tests.
+        DrupalUserRegistry:
+            defaultPass: "foobar"
+            users:
+                administrator:
+                    name: test.administrator
+                    email: test.administrator@example.com
+                    pass: "foo"
+                    roles: [ administrator, editor ]
+                    root: true
+                editor:
+                    name: test.editor
+                    email: editor@example.com
+                    roles: [ editor, moderator ]
+                moderator:
+                    name: "test.moderator"
+                    email: "sub.editor@example.com"
+                    roles: [ moderator ]
+                authenticated:
+                    name: authenticated
+                    email: authenticated@example.com
+                    roles: [ "authenticated user" ]
+            drush-alias: "@d7.local"
+
 env:
     # Override Db module configuration to run on local.
     local:
diff --git a/tests/functional/CommandCest.php b/tests/functional/CommandCest.php
new file mode 100644
index 0000000..0989c36
--- /dev/null
+++ b/tests/functional/CommandCest.php
@@ -0,0 +1,89 @@
+<?php
+
+use \FunctionalTester;
+
+use Symfony\Component\Console\Application;
+use Codeception\Module\Drupal\UserRegistry\Command\CreateTestUsersCommand;
+use Codeception\Module\Drupal\UserRegistry\Command\DeleteTestUsersCommand;
+use Codeception\Util\Fixtures;
+
+/**
+ * Class CommandCest
+ *
+ * @group cli
+ */
+class CommandCest
+{
+    /**
+     * @var Application
+     */
+    protected $app;
+
+    /**
+     * Set up the console application.
+     *
+     * @param FunctionalTester $I
+     */
+    public function _before(FunctionalTester $I)
+    {
+        $this->app = new Application();
+        $this->app->add(new CreateTestUsersCommand());
+        $this->app->add(new DeleteTestUsersCommand());
+    }
+
+    /**
+     * Tear down any created console application.
+     *
+     * @param FunctionalTester $I
+     */
+    public function _after(FunctionalTester $I)
+    {
+//        unset($this->app);
+    }
+
+    /**
+     * @param FunctionalTester $I
+     */
+    public function testCreateUsersCommand(FunctionalTester $I)
+    {
+        $command = $this->app->find("users:create");
+        $tester = new \Symfony\Component\Console\Tester\CommandTester($command);
+
+        $tester->execute(
+            array(
+                "command" => $command->getName(),
+                "suite" => "unit",
+            )
+        );
+
+        // @todo Configs are a bit muxed ip...
+        $config = Fixtures::get("validModuleConfig");
+        foreach ($config["users"] as $user => $userDetails) {
+            $I->seeInDatabase("users", array("name" => $userDetails["name"]));
+        }
+    }
+
+    /**
+     * @before testCreateUsersCommand
+     *
+     * @param FunctionalTester $I
+     */
+    public function testCreateAndDeleteUsersCommand(FunctionalTester $I)
+    {
+        $command = $this->app->find("users:delete");
+        $tester = new \Symfony\Component\Console\Tester\CommandTester($command);
+
+        $tester->execute(
+            array(
+                "command" => $command->getName(),
+                "suite" => "unit",
+            )
+        );
+
+        // @todo Configs are a bit muxed ip...
+        $config = Fixtures::get("validModuleConfig");
+        foreach ($config["users"] as $user => $userDetails) {
+            $I->dontSeeInDatabase("users", array("name" => $userDetails["name"]));
+        }
+    }
+}
diff --git a/tests/unit.suite.yml b/tests/unit.suite.yml
index 9314168..aa898c9 100644
--- a/tests/unit.suite.yml
+++ b/tests/unit.suite.yml
@@ -4,3 +4,27 @@
 class_name: UnitTester
 modules:
     enabled: [UnitHelper]
+    config:
+        # Used for command line tests.
+        DrupalUserRegistry:
+            defaultPass: "foobar"
+            users:
+                administrator:
+                    name: test.administrator
+                    email: test.administrator@example.com
+                    pass: "foo"
+                    roles: [ administrator, editor ]
+                    root: true
+                editor:
+                    name: test.editor
+                    email: editor@example.com
+                    roles: [ editor, moderator ]
+                moderator:
+                    name: "test.moderator"
+                    email: "sub.editor@example.com"
+                    roles: [ moderator ]
+                authenticated:
+                    name: authenticated
+                    email: authenticated@example.com
+                    roles: [ "authenticated user" ]
+            drush-alias: "@d7.local"
diff --git a/tests/unit/CommandTest.php b/tests/unit/CommandTest.php
new file mode 100644
index 0000000..40e30bd
--- /dev/null
+++ b/tests/unit/CommandTest.php
@@ -0,0 +1,46 @@
+<?php
+
+use Symfony\Component\Console\Application;
+use Codeception\Module\Drupal\UserRegistry\Command\CreateTestUsersCommand;
+use Codeception\Module\Drupal\UserRegistry\Command\DeleteTestUsersCommand;
+
+/**
+ * Class CommandTest
+ *
+ * @group cli
+ */
+class CommandTest extends \Codeception\TestCase\Test
+{
+    /**
+     * @var \UnitTester
+     */
+    protected $tester;
+
+    protected function _before()
+    {
+    }
+
+    protected function _after()
+    {
+    }
+
+    /**
+     *
+     */
+    public function testCreateUsersCommand()
+    {
+        $app = new Application();
+        $app->add(new CreateTestUsersCommand());
+        $command = $app->find("users:create");
+        $tester = new \Symfony\Component\Console\Tester\CommandTester($command);
+
+        $tester->execute(
+            array(
+                "command" => $command->getName(),
+                "suite" => "unit",
+            )
+        );
+
+        // @todo Verify...?
+    }
+}
diff --git a/tests/unit/TestUsersCommandTraitTest.php b/tests/unit/TestUsersCommandTraitTest.php
new file mode 100644
index 0000000..4210ed7
--- /dev/null
+++ b/tests/unit/TestUsersCommandTraitTest.php
@@ -0,0 +1,27 @@
+<?php
+
+/**
+ * Test the methods in TestUsersCommandTrait
+ *
+ * @group cli
+ */
+class TestUsersCommandTraitTest extends \Codeception\TestCase\Test
+{
+    use \Codeception\Module\Drupal\UserRegistry\Command\TestUsersCommandTrait;
+
+    /**
+     * @var \UnitTester
+     */
+    protected $tester;
+
+    /**
+     * Test getTestUsers() throws the expected exception when given an invalid configuration.
+     *
+     * @throws \Codeception\Exception\Module
+     */
+    public function testGetTestUsersThrowsModuleExceptionWithInvalidConfig()
+    {
+        $this->setExpectedException('\Codeception\Exception\Module');
+        $this->getTestUsers("unit", array("invalid" => "config"));
+    }
+}