If you are running one Drupal site, or multiple sites, or multiple muiti-site installations, you will at some point be wrangling modules. Drush can help you list, install, and uninstall modules.

% drush pml

If you want to see a specific module you can filter the result through grep.

%drush pml | grep <pattern>

e.g., %drush pml | grep token will show you modules with 'token' in the name.

You can also install, enable and disable modules if you need to debug or test.

Download a module:

%drush dl <module name>

Enable the module:

%drush en <module name>

Disable the module

%drush dis <module name>

If you need to fully uninstall a module, which will also run any hook_uninstall() in a module which can be handy for debugging.

Uninstall the module:

%drush pm-uninstall <module name>

You can script these commands as well with aliases, allowing you to enable/disable modules across multiple sites.