diff --git a/imagecache.drush.inc b/imagecache.drush.inc
new file mode 100644
index 0000000..100019b
--- /dev/null
+++ b/imagecache.drush.inc
@@ -0,0 +1,178 @@
+<?php
+
+/**
+ * Implementation of hook_drush_command().
+ */
+function imagecache_drush_command() {
+  $items = array();
+
+  $items['imagecache-flush'] = array(
+    'callback' => 'imagecache_drush_preset_flush',
+    'description' => dt('Flush an imagecache preset.'),
+    'examples' => array(
+      'drush imagecache-flush foobar' => dt('Flush the ImageCache preset "foobar".'),
+    ),
+    'aliases' => array('icf'),
+  );
+
+  $items['imagecache-build'] = array(
+    'callback' => 'imagecache_drush_preset_build',
+    'description' => dt('Build imagecache derivates for all images for a given preset.'),
+    'examples' => array(
+      'drush imagecache-build foobar www.example.com' => dt('Build all images for preset "foobar".'),
+    ),
+    'aliases' => array('icb'),
+  );
+
+  return $items;
+}
+
+/**
+ * Implementation of hook_drush_help().
+ */
+function imagecache_drush_help($section) {
+  switch ($section) {
+    case 'drush:imagecache-flush':
+      return dt('Flush a given preset.');
+    case 'drush:imagecache-build':
+      return dt('Build derivative images for a given preset.');
+  }
+}
+
+/**
+ * Drush callback to perform actual imagecache preset flush.
+ */
+function imagecache_drush_preset_flush() {
+  $args = func_get_args();
+
+  foreach (imagecache_presets(TRUE) as $preset) {
+    $preset_names[] = $preset['presetname'];
+  }
+
+  if (empty($args)) {
+    $choice = drush_choice($preset_names, 'Enter a number to choose which preset to flush.');
+    if ($choice !== FALSE) {
+      $args[] = $preset_names[$choice];
+    }
+  }
+  else {
+    // Implement 'all'
+    if (count($args) == 1 && $args[0] == 'all') {
+      $args = $preset_names;
+    }
+  }
+
+  // Remove any invalid preset names and report them as errors.
+  $not_found = array_diff($args, $preset_names);
+  $args = array_intersect($args, $preset_names);
+  if ($not_found) {
+    drush_log(dt('Preset(s) not found: @presets', array('@presets' => implode($not_found, ' '))), 'error');
+  }
+
+  if (empty($args)) {
+    return FALSE;
+  }
+
+  foreach ($args as $arg) {
+    // Load preset.
+    if ($preset = imagecache_preset_by_name($arg)) {
+      // This mimics the logic inside of the function
+      // imagecache_preset_flush(), but without the access check.
+      $presetdir = DRUPAL_ROOT . base_path() . file_directory_path() .'/imagecache/'. $preset['presetname'];
+      if (is_dir($presetdir)) {
+        _imagecache_recursive_delete($presetdir);
+        drush_log(dt('Flushed "@preset" preset.', array('@preset' => $arg)), 'ok');
+      }
+      else {
+        drush_log(dt('Cache for preset "@preset" was already empty.', array('@preset' => $arg)), 'ok');
+      }
+    }
+  }
+  return TRUE;
+}
+
+/**
+ * Drush callback to perform actual imagecache preset build.
+ */
+function imagecache_drush_preset_build() {
+  $args = func_get_args();
+
+  // Rebuild imagecache presets.
+  imagecache_presets(TRUE);
+
+  // Change the running dir.
+  $root = array_pop($args);
+  if (is_dir($root)) {
+    $_SERVER['DOCUMENT_ROOT'] = $root;
+  }
+  else {
+    $args[] = $root;
+  }
+
+  foreach (imagecache_presets(TRUE) as $preset) {
+    $preset_names[] = $preset['presetname'];
+  }
+
+  if (empty($args)) {
+    $choice = drush_choice($preset_names, 'Enter a number to choose which preset to flush.');
+    if ($choice !== FALSE) {
+      $args[] = $preset_names[$choice];
+    }
+  }
+  elseif ($args[0] == 'all') {
+    // Implement 'all'
+    $args = $preset_names;
+  }
+
+  // Remove any invalid preset names and report them as errors.
+  $not_found = array_diff($args, $preset_names);
+  $args = array_intersect($args, $preset_names);
+  if ($not_found) {
+    drush_log(dt('Preset(s) not found: @presets', array('@presets' => implode($not_found, ' '))), 'error');
+  }
+  
+  if (empty($args)) {
+    return FALSE;
+  }
+
+  // Get a list of files to processes.
+  $file_query = db_query("SELECT filepath FROM {files} where filemime LIKE 'image%' ORDER BY fid DESC");
+  $files = array();
+  drush_log(dt('Generating file list...', array()), 'ok');
+  while ($filepath = db_result($file_query)) {
+    if (file_exists($filepath)) {
+      $files[] = $filepath;
+    }
+  }
+  if (empty($files)) {
+    drush_log(dt('No images found in the files table.', array()), 'error');
+    return FALSE;
+  }
+  $count = count($files);
+  drush_log(dt('Done. @count files to process using these presets: @presets', array('@count' => $count, '@presets' => implode(' ', $args))), 'ok');
+
+  // Generate the images.
+  $counter = 0;
+  $mod = round($count / 200);
+  foreach ($files as $filepath) {
+    foreach ($args as $arg) {
+      $path = imagecache_create_path($arg, $filepath);
+      if (!file_exists($path)) {
+        imagecache_generate_image($arg, $filepath);
+        if (file_exists($path)) {
+          drush_log(dt('File "@file" created.', array('@file' => $path)), 'ok');
+        }
+        else {
+          drush_log(dt('File "@file" not created.', array('@file' => $path)), 'error');
+        }
+      }
+    }
+    // Output progress.
+    $counter++;
+    if ($counter % $mod == 0) {
+      drush_log(dt('@percent% done.', array('@percent' => round($counter / $count * 100, 2))), 'ok');
+    }
+  }
+
+  return TRUE;
+}