Cpio

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{{FormatInfo
 
{{FormatInfo
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|name=cpio
 
|formattype=electronic
 
|formattype=electronic
 
|subcat=Archiving
 
|subcat=Archiving
 
|extensions={{ext|cpio}}
 
|extensions={{ext|cpio}}
 
|mimetypes={{mimetype|application/x-cpio}}
 
|mimetypes={{mimetype|application/x-cpio}}
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|pronom={{PRONOM|fmt/635}}
 
}}
 
}}
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{{DISPLAYTITLE:cpio}}
 +
 
'''cpio''' is a non-compressed file archive format for [[Unix]]-style systems. It was originally intended for tape archiving, similar to the [[Tape Archive]] (tar) format.
 
'''cpio''' is a non-compressed file archive format for [[Unix]]-style systems. It was originally intended for tape archiving, similar to the [[Tape Archive]] (tar) format.
  
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To list files:
 
To list files:
   $ cpio -it -I examples.cpio
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   $ cpio -it -I example.cpio
 +
 
 +
== Identification ==
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A cpio archive begins with one of the following signatures:
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* <code>0x71 0xC7</code>
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* <code>0xC7 0x71</code>
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* <code>'0' '7' '0' '7'</code>
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 +
Be aware that there are [[afio]] extensions to cpio format that are not supported by most cpio utilities. For one thing, if most of the filenames end in ".z", it's probably a compressed afio archive.
  
 
== Specifications ==
 
== Specifications ==
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== Software ==
 
== Software ==
 
* [http://www.gnu.org/software/cpio/cpio.html GNU cpio]
 
* [http://www.gnu.org/software/cpio/cpio.html GNU cpio]
* [http://www.libarchive.org/ libarchive / bsdcpio]
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* [http://www.libarchive.org libarchive / bsdcpio]
 
* [http://gnuwin32.sourceforge.net/packages/cpio.htm cpio for Windows]
 
* [http://gnuwin32.sourceforge.net/packages/cpio.htm cpio for Windows]
* [http://www.7-zip.org/ 7-Zip]
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* [[7-Zip]]
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* [[afio]]
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* [[Konvertor]]
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* {{Deark}}
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== Sample files ==
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* http://ftp.gnu.org/gnu/tar/tar-1.27.cpio.gz
  
 
== Other links ==
 
== Other links ==
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* [http://www.gnu.org/software/cpio/manual/index.html GNU cpio manual]
 
* [http://www.gnu.org/software/cpio/manual/index.html GNU cpio manual]
 
* [http://rightsock.com/~kjw/Ramblings/tar_v_cpio.html tar vs. cpio]
 
* [http://rightsock.com/~kjw/Ramblings/tar_v_cpio.html tar vs. cpio]
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* [https://web.archive.org/web/20190809160054/http://www.forensicswiki.org/wiki/Cpio ForensicsWiki entry] (no useful detail)

Revision as of 15:23, 1 November 2020

File Format
Name cpio
Ontology
Extension(s) .cpio
MIME Type(s) application/x-cpio
PRONOM fmt/635


cpio is a non-compressed file archive format for Unix-style systems. It was originally intended for tape archiving, similar to the Tape Archive (tar) format.

Contents

Examples

To extract files, using the command line utility:

 $ cpio -idmv -I example.cpio

To list files:

 $ cpio -it -I example.cpio

Identification

A cpio archive begins with one of the following signatures:

  • 0x71 0xC7
  • 0xC7 0x71
  • '0' '7' '0' '7'

Be aware that there are afio extensions to cpio format that are not supported by most cpio utilities. For one thing, if most of the filenames end in ".z", it's probably a compressed afio archive.

Specifications

Software

Sample files

Other links

Personal tools
Namespaces

Variants
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