Dar (disk archiver)
|Initial release||2 February 2002|
|Stable release||2.4.17 / January 31, 2015|
- Support for slices, archives split over multiple files of a particular size.
- Option of deleting files from the system which are removed in the archive.
- Incremental backup,
- Decremental backup,
- Takes care of hard-linked inodes (hard-linked plain files, char devices, block devices, hard-linked symlinks (!))
- Takes care of sparse files,
- Takes care of the withdrawn POSIX draft Extended Attributes, which implies withdrawn POSIX draft File ACL under Linux and File forks under Mac OS X,
- Per-file compression with gzip, bzip2 or lzo (as opposed to compressing the whole archive). An individual can choose not to compress already compressed files based on their filename suffix.
- Fast-extracting of files from anywhere in the archive.
- Fast listing of archive contents through saving the catalogue of files in the archive.
- Optional Blowfish, Twofish, AES, Serpent, Camellia encryption.
- Live filesystem backup: detects when a file has been modified while it was read for backup and can retry saving it up to a given maximum number of retries
- Live Database backup: a user command can be launched before and after saving a particular set of files or directories, suitable to put a database in a consistent state during its backup,
- hash file (md5 or sha1) generated on-fly for each slice, the resulting file is compatible with md5sum or sha1sum, to be able to quickly check each slice's integrity,
- Dar is filesystem independent: it may be used to restore a system to a partition of a different size and/or to a partition with a different filesystem.
- Runs under Linux, Windows, FreeBSD, NetBSD, OpenSolaris, Mac OS X and probably some other systems (dar should run at least under any Unix system).
There are GUI frontends for dar called:
A scheduler / command-line frontend known as SaraB allows the Towers of Hanoi, Grandfather-Father-Son, or any custom backup rotation strategy, and modifications are available for PAR file support. Extended versions known as bzSaraB and baras are also available.