Search in all aliases for module occurrence. Returns hits and version. Usage " ./module_finder.drush module_name"

module_finder.drush

#!/usr/bin/env drush
<?php
/**
 * Usage: " ./module_finder.drush metatag"
 * Usage multiple modules: " ./module_finder.drush 'views|metatag"
 */

// Get all aliases.
$aliases = _drush_sitealias_all_list();

$arguments = drush_get_arguments();
if (!empty($arguments[2])) {
  $module_name = $arguments[2];

  // Drop alias @none
  unset($aliases['@none']);

  // Get applied aliases to drop.
  $exclude_aliases = drush_get_option('exclude-aliases');
  $exclude = array();
  $exclude = explode(',', $exclude_aliases);

  // Traverse aliases
  foreach ($aliases as $alias_name => $alias) {
    // Skip loop if in exclude option.
    if (in_array($alias_name, $exclude)) {
      continue;
    }

    $output = array();
    exec('drush ' . $alias_name . ' pm-list -y | grep -E "(' . $module_name . ')"', $output, $exit_status);

    if (!empty($output)) {
      foreach ($output as $output_line) {
        drush_print('' . $alias_name . ': is running ' . $output_line);
      }
    }
  }
}
else {
  drush_set_error('MISSING_ARGUMENTS', 'Error: Please define a module name as parameter');
}

Shall we integrate this into our Site Aliases repo?

We can. It's a naive and slow way of finding modules in all of our sites, but it works.