**General usage note:** Remember that each command will be invoked in a particular environment (configuration, database). The default environment when nothing is specified is "development". In production, you usually prepend all commands with `RAILS_ENV=production` to opt into the production environment. This is not necessary if you're using the Docker images, because that environment variable is set in the image for you. Similarly, prepending `bundle exec` is not necessary when using Docker. The following invocations are equivalent:
|mastodon:media:remove_silenced|Purge all media uploads by silenced accounts. Completely removes records, as if their statuses never had attachments|
|mastodon:media:remove_remote|Remove local cache of remote media attachments older than some time period (defaults to 7 days). Removes only cache, record of an attachment existing remains|NUM_DAYS=7|
|mastodon:emails:digest|Sends out a personal digest to all eligible inactive users. Digest includes mentions since the last time the user was active. No e-mail is sent if there is no new content since last digest or user activity|
|mastodon:push:clear| Normally, a subscription to a once-followed user remains forever, in case the user gets re-followed later. You can purge such subscriptions with 0 followers if you wish|
|mastodon:feeds:clear_all|Purge all home timelines from redis. Useful only for troubleshooting, when e.g. resetting database during development|
|mastodon:feeds:build|Regenerates home timelines for all active users. Useful only for troubleshooting, e.g. if you lost your redis database|
|mastodon:webpush:generate_vapid_key|Generates secrets for WebPush notifications|
These are one-off tasks for updating from one version of Mastodon to another. They are noted in the particular release's upgrade notes and are not relevant outside of that.
