This is a port of the 4.4BSD filesystem backup suite. Dump examines files on a filesystem and determines which files need to be backed up. These files are copied to the given disk, tape or other storage medium for safe keeping.

The restore command performs the inverse function of dump. A full backup of a filesystem may be restored and subsequent incremental backups layered on top of it. Single files and directory subtrees may be restored from full or partial backups.