{
 "id": "cpio",
 "name": "Cpio",
 "category": "archive",
 "identifiers": {
  "extensions": [
   "cpio"
  ],
  "mime": [
   "application/x-cpio"
  ],
  "puid": [
   "fmt/635"
  ],
  "wikidata": [
   "Q285296"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "c771",
    "notes": "CPIO"
   }
  ],
  "signatures": [
   {
    "name": "CPIO",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "c771"
     }
    ]
   }
  ]
 },
 "status": "writable",
 "summary": "Cpio is a general file archiver utility and its associated file format, generally found in UNIX environments.",
 "tools": [
  {
   "name": "Apache Tika",
   "url": "https://tika.apache.org",
   "reads": true,
   "writes": false,
   "license": "Apache Software License 2.0",
   "open_source": true
  },
  {
   "name": "Archive Utility",
   "url": "https://www.wikidata.org/wiki/Q963462",
   "reads": true,
   "writes": false
  },
  {
   "name": "B1 Free Archiver",
   "url": "http://www.b1.org/",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "diffoscope",
   "url": "https://diffoscope.org/",
   "reads": true,
   "writes": false
  },
  {
   "name": "libarchive",
   "url": "https://libarchive.org/",
   "reads": true,
   "writes": true,
   "license": "2-clause BSD License",
   "open_source": true
  },
  {
   "name": "Q215051",
   "url": "https://7-zip.org",
   "reads": true,
   "writes": false,
   "license": "GNU Lesser General Public License",
   "open_source": true
  }
 ],
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/Cpio",
   "kind": "wiki"
  },
  {
   "name": "Kaitai Struct: cpio_old_le",
   "url": "https://formats.kaitai.io/cpio_old_le/",
   "kind": "grammar",
   "license": "CC0-1.0"
  },
  {
   "name": "PRONOM fmt/635",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/635",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q285296",
   "url": "https://www.wikidata.org/wiki/Q285296",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "ffw",
   "kaitai",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-24",
 "parsers": [
  {
   "engine": "kaitai",
   "url": "https://github.com/kaitai-io/kaitai_struct_formats/blob/master/archive/cpio_old_le.ksy",
   "license": "CC0-1.0"
  }
 ],
 "aliases": [],
 "structure": [],
 "conversions": [],
 "samples": [],
 "claims": [],
 "verification": []
}