diff --git a/backdrop.drush.inc b/backdrop.drush.inc
index 271c5b5..c9ecb7b 100644
--- a/backdrop.drush.inc
+++ b/backdrop.drush.inc
@@ -74,6 +74,10 @@ function backdrop_drush_command_alter(&$command) {
       $backdrop_command = 'backdrop-pm-enable';
       break;
 
+    case 'pm-disable':
+      $backdrop_command = 'backdrop-pm-disable';
+      break;
+
     case 'user-password':
       $backdrop_command = 'backdrop-user-password';
       break;
diff --git a/commands/pm/backdrop_pm_disable.drush.inc b/commands/pm/backdrop_pm_disable.drush.inc
new file mode 100644
index 0000000..c8e398a
--- /dev/null
+++ b/commands/pm/backdrop_pm_disable.drush.inc
@@ -0,0 +1,82 @@
+<?php
+
+/**
+ * @file
+ * Drush project management disable command.
+ */
+
+use Drush\Log\LogLevel;
+
+/**
+ * Implements hook_drush_command().
+ */
+function backdrop_pm_disable_drush_command() {
+  $items = array();
+  $items['backdrop-pm-disable'] = array(
+    'description' => 'Disable backdrop modules.',
+    'callback' => 'backdrop_command_pm_disable',
+    'arguments' => array(
+      'module-name' => array('The name of the module(s) you would like to disable.'),
+    ),
+    'aliases' => array('dis'),
+    'required-arguments' => TRUE,
+    'bootstrap' => \Drush\Boot\BackdropBoot::BOOTSTRAP_FULL,
+  );
+
+  return $items;
+}
+
+/**
+ * Command callback for pm-disable.
+ */
+function backdrop_command_pm_disable() {
+  $projects = func_get_args();
+
+  // Get modules present in files system that are possible to disable.
+  $module_list = system_rebuild_module_data();
+
+  foreach ($projects as $project) {
+    // Check if requested module is required by other modules.
+    $required_bys = $module_list[$project]->required_by;
+
+    $kids = [];
+    if (!empty($required_bys)) {
+      foreach ($required_bys as $key => $required) {
+        if (module_exists($key) && !in_array($key, $projects)) {
+          array_unshift($projects, $key);
+          $kids = array_merge($projects, $kids);
+        }
+        else {
+          // Kids is already accounted for.
+        }
+      }
+    }
+  }
+
+  $operating_list = ($kids) ? implode(',', $kids) : implode(', ', $projects);
+  $proceed = drush_confirm(
+    "The following projects will be disabled: $operating_list.
+    Do you want to disable the projects?"
+  );
+
+  if (!$proceed) {
+    drush_print_r(
+      dt("\n\t\e[033mCancelled\e[0m $operating_list not disabled.\n")
+    );
+  }
+  elseif (!empty($kids)) {
+    foreach ($kids as $kid) {
+      module_disable([$kid]);
+    }
+  }
+  else {
+    // Now disable the projects specified on the command line.
+    foreach ($projects as $project) {
+      module_disable([$project]);
+    }
+  }
+
+  drush_print_r(
+    dt("\n\t\033[32mSuccess\033[0m: $operating_list are disabled.\n")
+  );
+}
diff --git a/commands/pm/backdrop_pm_enable.drush.inc b/commands/pm/backdrop_pm_enable.drush.inc
new file mode 100644
index 0000000..475c13d
--- /dev/null
+++ b/commands/pm/backdrop_pm_enable.drush.inc
@@ -0,0 +1,140 @@
+<?php
+/**
+ * @file
+ * Drush project management enable command.
+ */
+
+use Drupal\Core\Logger\RfcLogLevel;
+
+/**
+ * Implements hook_drush_command().
+ */
+function backdrop_pm_enable_drush_command() {
+  $items = array();
+  $items['backdrop-pm-enable'] = array(
+    'description' => 'Enable backdrop modules.',
+    'callback' => 'backdrop_command_pm_enable',
+    'hidden' => TRUE,
+    'arguments' => array(
+      'module-name' => array('The name of the module(s) you would like to enable.'),
+    ),
+    'required-arguments' => TRUE,
+    'aliases' => array('en'),
+    'bootstrap' => \Drush\Boot\BackdropBoot::BOOTSTRAP_FULL,
+  );
+
+  return $items;
+}
+
+/**
+ * Command callback enable modules.
+ *
+ * @see _enable_project()
+ */
+function backdrop_command_pm_enable() {
+  $projects = func_get_args();
+
+  if (!isset($projects)) {
+    drush_print_r(dt("\tPlease provide module name(s)\n\n"));
+    return;
+  }
+
+  // Get modules present in files system that are possible to enable.
+  $module_list = system_rebuild_module_data();
+
+  // Loop through projects to handle dependencies.
+  foreach ($projects as $project) {
+    // Check if requested module depends on other modules.
+    $dependencies = $module_list[$project]->info['dependencies'];
+    if (!empty($dependencies)) {
+      foreach ($dependencies as $dependency) {
+        // Prepend dependency to projects list.
+        if (!module_exists($dependency) && !in_array($dependency, $projects)) {
+          array_unshift($projects, $dependency);
+        }
+      }
+    }
+  }
+
+  $projects_list = implode(', ', $projects);
+  $proceed = drush_confirm(
+    "The following projects will be enabled: $projects_list.
+    Do you want to enable the projects?"
+  );
+
+  if (!$proceed) {
+    drush_print_r(
+      dt("\n\t\e[033mCancelled\e[0m $projects_list not enabled.\n")
+    );
+  }
+  else {
+    // Enable the projects specified on the cli with dependencies.
+    foreach ($projects as $project) {
+      $status = _enable_project($project, $module_list);
+      if (!$status) {
+        // _enable_project() already output an error message.
+        return FALSE;
+      }
+    }
+
+    backdrop_flush_all_caches();
+  }
+}
+
+/**
+ * Internal function to enable module or theme.
+ *
+ * @param string $project
+ *   The project machine name to be enabled.
+ *
+ * @param array $module_list
+ *   List of modules that exist in the file system.
+ *
+ * @return bool
+ *   TRUE if the module is enabled; FALSE otherwise.
+ *
+ * @see backdrop_command_pm_enable_validate()
+ */
+function _enable_project($project, $module_list) {
+  // Check against the module_list.
+  $project_exists = backdrop_command_pm_enable_validate($project, $module_list);
+  // If the $project directory does not exist then gracefully fail.
+  if (!$project_exists) {
+    drush_print_r("\n\t\e[031mError\e[0m $project does not exist in your Backdrop installation.");
+    drush_print_r("\tTry downloading $project first with the command: drush dl $project\n");
+    return FALSE;
+  }
+  $query = db_select('system', 's')
+    ->fields('s');
+  $query->condition('name', $project);
+  $query->condition('type', 'module');
+  $module = $query->execute()->fetchAssoc();
+
+  if ($module['status']) {
+    drush_print_r(
+      "\n\t\e[31m Failed\e[0m to enable module " . $module['name'] . ": it is already enabled.\n"
+    );
+    return FALSE;
+  }
+
+  if (module_enable(array($project), FALSE)) {
+    drush_print_r("\n\t\e[32mSuccess\e[0m: module $project enabled.\n");
+    return TRUE;
+  }
+  drush_print_r("\n\t\e[31mFailed\e[0m to enable module " . $project);
+  return FALSE;
+}
+
+/**
+ * Command pm-update validate function.
+ *
+ * @param string $project
+ *   The project that the user is attempting to enable.
+ */
+function backdrop_command_pm_enable_validate($project, $module_list) {
+  if (array_key_exists($project, $module_list)) {
+    return TRUE;
+  }
+
+  return FALSE;
+}
diff --git a/includes/environment.inc b/includes/environment.inc
index 92bb7ab..ff41b30 100644
--- a/includes/environment.inc
+++ b/includes/environment.inc
@@ -1,10 +1,10 @@
 <?php
 /**
  * @file
- * Specific functions for a backdrop 7 environment.
- * drush_include_engine() magically includes either this file
- * or environment_X.inc depending on which version of backdrop drush
- * is called from.
+ * Specific functions for a Backdrop 1 environment.
+ *   drush_include_engine() magically includes either this file
+ *   or environment_X.inc depending on which version of backdrop drush
+ *   is called from.
  */
 
 /**
@@ -148,51 +148,6 @@ function drush_get_named_extensions_list($extensions) {
   return $result;
 }
 
-/**
- * Enable a list of modules.
- *
- * It is assumed the list contains all the dependencies not already enabled.
- *
- * @param array $modules
- *   Array of module names
- */
-function drush_module_enable($modules) {
-  // The list of modules already have all the dependencies, but they might not
-  // be in the correct order. Still pass $enable_dependencies = TRUE so that
-  // Backdrop will enable the modules in the correct order.
-  module_enable($modules);
-  // Flush all caches.
-  backdrop_flush_all_caches();
-}
-
-/**
- * Disable a list of modules.
- *
- * It is assumed the list contains all dependents not already disabled.
- *
- * @param array $modules
- *   Array of module names
- */
-function drush_module_disable($modules) {
-  // The list of modules already have all the dependencies, but they might not
-  // be in the correct order. Still pass $enable_dependencies = TRUE so that
-  // Backdrop will enable the modules in the correct order.
-  module_disable($modules);
-  // Flush all caches.
-  backdrop_flush_all_caches();
-}
-
-/**
- * Uninstall a list of modules.
- *
- * @param array $modules
- *   Array of module names
- */
-function drush_module_uninstall($modules) {
-  require_once DRUSH_BACKDROP_CORE . '/includes/install.inc';
-  backdrop_uninstall_modules($modules);
-}
-
 /**
  * Checks that a given module exists and is enabled.
  *
@@ -247,26 +202,6 @@ function drush_get_themes($include_hidden = TRUE) {
   return $themes;
 }
 
-/**
- * Enable a list of themes.
- *
- * @param array $themes
- *   Array of theme names.
- */
-function drush_theme_enable($themes) {
-  theme_enable($themes);
-}
-
-/**
- * Disable a list of themes.
- *
- * @param array $themes
- *   Array of theme names.
- */
-function drush_theme_disable($themes) {
-  theme_disable($themes);
-}
-
 /**
  * Helper function to obtain the severity levels based on Backdrop version.
  *