forked from Lainports/opnsense-ports
8cb1a96ede
Taken from: https://github.com/freebsd/freebsd-ports.git Commit id: 5070672073b68be364139bc6b3a89100bd17d331
20 lines
1.1 KiB
Text
20 lines
1.1 KiB
Text
GNU ddrescue is a data recovery tool. It copies data from one file or
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block device (hard disc, cdrom, etc) to another, trying hard to rescue
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data in case of read errors. Ddrescue does not truncate the output file
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if not asked to. So, every time you run it on the same output file, it
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tries to fill in the gaps. The basic operation of ddrescue is fully
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automatic. That is, you don't have to wait for an error, stop the
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program, read the log, run it in reverse mode, etc. If you use the
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logfile feature of ddrescue, the data is rescued very efficiently (only
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the needed blocks are read). Also you can interrupt the rescue at any
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time and resume it later at the same point.
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Automatic merging of backups: If you have two or more damaged copies of
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a file, cdrom, etc, and run ddrescue on all of them, one at a time,
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with the same output file, you will probably obtain a complete and
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error-free file. This is so because the probability of having damaged
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areas at the same places on different input files is very low. Using
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the logfile, only the needed blocks are read from the second and
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successive copies.
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WWW: http://www.gnu.org/software/ddrescue/ddrescue.html
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