deb (Debian package) is a file format used for software distribution in the Debian Linux platform. It is actually an AR archive, with content that includes some tar files.

The "udeb" files are in the same basic format as "deb", but are considered "micro deb", used for smaller packages with only the most essential files.

Used in file types
  • .deb
  • .udeb
This type may also appear as

This type isn't known to appear as any other mime types

Further reading
  1. Let's Solve the File Format Problem!