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csplitb

Command-line tool like unix csplit but which splits binary files based on content boundaries rather than index boundaries.

This is particularly useful for salvaging jpegs from a corrupted disk image.

Example usage:

$ csplitb --prefix photo --suffix .jpg --number 4 ffd8ffe1 corrupted-disk-image.raw

This will split the disk image, keeping the header, into photo0000.jpg, photo0001.jpg, etc. Because a disk image represents a potentially fragmented file system, some (or all) of the jpeg files may be corrupted.

The "ffd8ffe1" here is a jpeg header. I'm not an expert on the jpeg format, so it's possible that you may need to use a different hex search term. Use a hex editor or viewer such as xxd to find what content you want to split on.

Installation

pip install csplitb

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Python tool like unix csplit but which splits binary files based on content.

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