nnBackup is a command line utility, which allows to fulfil the backup copying in the numbered stack of the directories, to fulfil incremental backup in style of UNIX dump, and also to synchronize the directories in one and in two passes. It is possible to set a inclusion and exclusion masks, to compress files (gz and zip), to copy access rights (NTFS), to copy a directory tree or only one directory, to delete files absent in the original directory etc.

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