Disk ARchive
Dar is a shell command that makes backup of a directory tree and files. Its features include splitting archives over several files, DVD, CD, ZIP, or floppies, compression, full or differential backups, strong encryption, proper saving and restoration of hard links, extended attributes, file forks, Door inodes, and sparse files, remote backup using pipes and external commands (such as ssh), and rearrangement of the "slices" of an existing archive. It can run commands between slices, before and after saving some defined files or directories (for a proper database backup, for example), and quickly retrieve individual files from differential and full backups. Several external GUIs exist as alternatives to its CLI interface, like kdar, DarGUI, SaraB, etc.
| Tags | Archiving Compression Packaging Utilities Security Cryptography backup DVD Disks Systems Administration |
|---|---|
| Licenses | GPLv2 |
| Operating Systems | POSIX Linux Windows Windows Solaris BSD NetBSD FreeBSD Mac OS X |
| Implementation | C++ |
Recent releases
- 09 Mar 2013 22:46
Release Notes: This release mainly contains two fixes. The first bug was located in the sparse file detection mechanism, leading a file containing a very specific string just before a hole to fail being backed up, with dar reporting "CRC error" at testing time. This same bug also caused "CRC error" to be reported at archive merging time. The second was located in the dar_manager database code, which led to database corruption. The fix avoids further corruption and also cleans up existing databases which have been corrupted by that bug.
- 07 Jan 2013 00:36
Release Notes: Release 2.4.9 brings several minor fixes. It fixes a bug in dar 2.4.x releases which led dar, in certain circumstances, to save hard-linked inodes even when files had not changed since the archive of reference was done (differential backup). The "security warning" has been restricted to only show for plain files. This release fixes a Segfault met when adding to a dar_manger database an archive having an empty string as a basename. It modifies dar_manager to consider ctime in addition to mtime for data timestamps, resulting in fewer warnings about mis-ordered archives in a database.
- 09 Sep 2012 18:15
Release Notes: This release brings several bugfixes concerning: memory management, a backward compatibility problem with dar_xform and old archives (older than 2.4.0) and a crash met while creating an archive with on-fly isolation. It also brings some acceleration while listing the contents of a database, and improves dar behavior when reading a corrupted encrypted archive.
- 05 Jul 2012 12:11
Release Notes: This release fixes an application crash, a compilation problem under Solaris, and several minor bugs.
- 24 Jun 2012 16:35
Release Notes: This release brings a fix on SPARC systems that lead the application to crash due to an alignment problem in CRC calculation routine (a problem only seen on Solaris). For all systems, it also brings a fix to the bug that let an interrupted archive be usable for further differential backup only in "sequential reading mode". Other fixes concern documentation or typos in the program messages.
Recent comments
Re: memory hungry
> if you have thousands files and a lot
> GB's, read first
> about memory usage.
The memory requirement is proportional to the
number of files not to the amount of data to be saved.
For more detailed info see
memory hungry
if you have thousands files and a lot GB's, read first
about memory usage.
scripts
I can recommend DAR. I have some helper scripts for it at www.sliqware.ndo.co.uk/
Works well with SSH and Cygwin
I use dar to perform remote network backups of a hosted linux server to a local Windows machine using the windows build of dar under cygwin. It works great. Wonderfull application.
Nice job on version2
Hi, I must compliment you on version 2 of dar. The documentation is much better organized and easier to
understand.
edrusb
02 Apr 2002 14:31
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