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28 lines
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28 lines
1.0 KiB
Plaintext
---
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syntax: markdown
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tags: [tldr, linux]
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source: https://github.com/tldr-pages/tldr.git
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---
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# duperemove
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> Finds duplicate filesystem extents and optionally schedule them for deduplication.
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> An extent is small part of a file inside the filesystem.
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> On some filesystems one extent can be referenced multiple times, when parts of the content of the files are identical.
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> More information: <https://markfasheh.github.io/duperemove/>.
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- Search for duplicate extents in a directory and show them:
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`duperemove -r {{path/to/directory}}`
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- Deduplicate duplicate extents on a Btrfs or XFS (experimental) filesystem:
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`duperemove -r -d {{path/to/directory}}`
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- Use a hash file to store extent hashes (less memory usage and can be reused on subsequent runs):
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`duperemove -r -d --hashfile={{path/to/hashfile}} {{path/to/directory}}`
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- Limit I/O threads (for hashing and dedupe stage) and CPU threads (for duplicate extent finding stage):
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`duperemove -r -d --hashfile={{path/to/hashfile}} --io-threads={{n}} --cpu-threads={{n}} {{path/to/directory}}`
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