Several DSpace features require that a script is run regularly (via cron, or similar).  Some of these features include:

• the e-mail subscription feature that alerts users of new items being deposited;
• the 'media filter' tool, that generates thumbnails of images and extracts the full-text of documents for indexing;
• the 'checksum checker' that tests the bitstreams in your repository for corruption;
• the sitemap generator, which builds compact lists of content to lessen the load created by search engine indexing.

These regularly scheduled tasks should be setup via either cron (for Linux/Mac OSX) or Windows Task Scheduler (for Windows).

Recommended Cron Settings

While every DSpace installation is unique, in order to get the most out of DSpace, we highly recommend enabling these basic cron settings:

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