About: Compression virus

This page provides a structured representation (serialized as HTML+RDFa) of the description of the entity denoted ("referred to") by the hyperlink that anchors the About: <Entity Label> text at the top.

The data is presented here in the form of a collection of Entity->Attribute->Value (EAV) or Subject->Predicate->Object (SPO) relations.

In conformance with core Web Architecture, the same description data may also be retrieved in a variety of other negotiable serialization formats, which currently include CSV, HTML+Microdata, (X)HTML+RDFa, N-Triples, Turtle, N3, RDF/JSON, JSON-LD, RDF/XML, Atom, and CXML.

Why is this page important?

This page and its neighbors provide 5-Star Linked Data URIs (Web Super Keys) for HTTP-accessible data. These URIs are powerful starting points for serendipitous data discovery using the Web's "follow your nose" pattern, as well as a key ingredient for SPARQL queries over HTTP, ODBC, JDBC, ADO.NET, OLE-DB, or XMLA connections.

A single link from this page can be the seed of a powerful Web traversal, en route to discovery and exploitation of unimagined insights, using existing tools such as browsers, spreadsheets, business intelligence and analytics packages, basic report writers, presentation generators, project management packages, and many others.

How can I discover more structured data like this?

A variety of discovery pointers are available to users and user agents (software programs) that include:

<link /> relations embedded within the <head /> section of each description page
"Link:" response headers included as part of HTTP response metadata.

Can I expose my own Web resources this way?

Yes! Simply include entries, based on the example below, in the <head/> section of your (X)HTML page, whether static or dynamically generated --

<link rel="related"
    title="My Data in Linked Data form"
    href="http://linkeddata.uriburner.com/about/id/<scheme-part-of-url>/<host-part-of-url>/<path-part-of-url>"
    />

The scheme part is the first bit of a URI, up to but not including the first colon (":"). The host part includes the port, if any, and is found between the double solidus ("//") following the first colon, and the first solidus ("/") thereafter. The path part is everything thereafter (possibly including a query part or fragment identifier part).

For example, if your original page were at --

http://en.wikipedia.org/wiki/Linked_Data

-- the scheme part is "http", the host part is "en.wikipedia.org", and the path part is "wiki/Linked_Data". You could therefore provide access to a Linked Data graph rendition by including a <head/> entry like this --

<link
    rel="related"
    title="Linked data - Wikipedia, the free encyclopedia - in Linked Data form"
    href="http://linkeddata.uriburner.com/about/id/http/en.wikipedia.org/wiki/Linked_Data"
    />

Additional Information

URIBurner.com -- a live service that produces pages like this
OpenLink Data Explorer (ODE) -- a browser plug-in that enables you to browse and bookmark Linked Data pages via additions to the browser menus, both main and contextual
- ODE usage examples

Sponging disallowed (Read-only view)

A compression virus is an example of a benevolent computer virus, invented by Fred Cohen. It searches for an uninfected executable file, compresses the file and prepends itself to it. The virus can be described in pseudo code program compression-virus:={01234567;subroutine infect-executable:= {loop:file = get-random-executable-file; if first-line-of-file = 01234567 then goto loop; compress file; prepend compression-virus to file; }main-program:= {if ask-permission then infect-executable; uncompress the-rest-of-this-file into tmpfile; run tmpfile;}}

% meta-cartridges called:

Meta-cartridge [execution time]:

Subject of Relation
Object of Relation

Property	Value
type	yago:MalevolentProgram106573020http://dbpedia.org/class/yago/MalevolentProgram106573020 dbpedia-owl:Buildinghttp://dbpedia.org/ontology/Building yago:WrittenCommunication106349220http://dbpedia.org/class/yago/WrittenCommunication106349220 yago:Code106355894http://dbpedia.org/class/yago/Code106355894 yago:CodingSystem106353757http://dbpedia.org/class/yago/CodingSystem106353757 yago:Program106568978http://dbpedia.org/class/yago/Program106568978 yago:Software106566077http://dbpedia.org/class/yago/Software106566077 yago:Writing106359877http://dbpedia.org/class/yago/Writing106359877 yago:Abstraction100002137http://dbpedia.org/class/yago/Abstraction100002137 yago:Communication100033020http://dbpedia.org/class/yago/Communication100033020 yago:WikicatComputerViruseshttp://dbpedia.org/class/yago/WikicatComputerViruses yago:Virus106585816http://dbpedia.org/class/yago/Virus106585816
sameAs	Compression virushttp://dbpedia.org/resource/Compression_virus fbase:m.06zk1h2http://rdf.freebase.com/ns/m.06zk1h2 http://yago-knowledge.org/resource/Compression_virushttp://yago-knowledge.org/resource/Compression_virus Compression virushttp://www.wikidata.org/entity/Q5157055 https://global.dbpedia.org/id/4hwYJhttps://global.dbpedia.org/id/4hwYJ
wasDerivedFrom	http://en.wikipedia.org/wiki/Compression_virus?oldid=1009836855&ns=0http://en.wikipedia.org/wiki/Compression_virus?oldid=1009836855&ns=0
dbpedia-owl:abstract	A compression virus is an example of a benevolent computer virus, invented by Fred Cohen. It searches for an uninfected executable file, compresses the file and prepends itself to it. The virus can be described in pseudo code program compression-virus:={01234567;subroutine infect-executable:= {loop:file = get-random-executable-file; if first-line-of-file = 01234567 then goto loop; compress file; prepend compression-virus to file; }main-program:= {if ask-permission then infect-executable; uncompress the-rest-of-this-file into tmpfile; run tmpfile;}} The 01234567 is the virus signature, and is used to make sure (if first-line-of-file = 01234567) the file is not already infected. The virus then asks for permission (ask-permission) to infect a random executable (get-random-executable-file). If the permission is granted, it compresses the executable (infect-executable), prepends itself to it (prepend), uncompresses the current executable file (uncompress the-rest-of-this-file) into a temporary file (tmpfile) and runs it (run tmpfile). Cruncher is an example of a compression virus, a strain of which – Cruncher.2092 – is described by McAfee as memory-resident virus that infects all but small com files, making them smaller. The reason for excluding small programs is that their infected versions will be bigger than their originals. (en)
dbpedia-owl:wikiPageID	23648708 (xsd:integer) http://www.w3.org/2001/XMLSchema#integer
dbpedia-owl:wikiPageRevisionID	1009836855 (xsd:integer) http://www.w3.org/2001/XMLSchema#integer
comment	A compression virus is an example of a benevolent computer virus, invented by Fred Cohen. It searches for an uninfected executable file, compresses the file and prepends itself to it. The virus can be described in pseudo code program compression-virus:={01234567;subroutine infect-executable:= {loop:file = get-random-executable-file; if first-line-of-file = 01234567 then goto loop; compress file; prepend compression-virus to file; }main-program:= {if ask-permission then infect-executable; uncompress the-rest-of-this-file into tmpfile; run tmpfile;}} (en)
label	Compression virus (en)
topic	dbpedia:Fred_Cohenhttp://dbpedia.org/resource/Fred_Cohen dbpedia:Compression_virus#thishttp://dbpedia.org/resource/Compression_virus#this Computer virushttp://dbpedia.org/resource/Computer_virus http://en.wikipedia.org/wiki/Compression_virushttp://en.wikipedia.org/wiki/Compression_virus
hypernym	dbpedia:Examplehttp://dbpedia.org/resource/Example
Subject	Computer viruseshttp://dbpedia.org/resource/Category:Computer_viruses
is primary topic of	http://en.wikipedia.org/wiki/Compression_virushttp://en.wikipedia.org/wiki/Compression_virus
dbpedia-owl:wikiPageLength	2100 (xsd:nonNegativeInteger) http://www.w3.org/2001/XMLSchema#nonNegativeInteger
dbpedia-owl:wikiPageWikiLink	dbpedia:Data_compressionhttp://dbpedia.org/resource/Data_compression dbpedia:Fred_Cohenhttp://dbpedia.org/resource/Fred_Cohen Computer viruseshttp://dbpedia.org/resource/Category:Computer_viruses dbpedia:COM_filehttp://dbpedia.org/resource/COM_file Computer virushttp://dbpedia.org/resource/Computer_virus dbpedia:Executablehttp://dbpedia.org/resource/Executable dbpedia:Temporary_filehttp://dbpedia.org/resource/Temporary_file McAfeehttp://dbpedia.org/resource/McAfee dbpedia:Terminate-and-stay-resident_programhttp://dbpedia.org/resource/Terminate-and-stay-resident_program

Property	Value
sameAs	Compression virushttp://dbpedia.org/resource/Compression_virus
primary topic	http://en.wikipedia.org/wiki/Compression_virushttp://en.wikipedia.org/wiki/Compression_virus
dbpedia-owl:wikiPageWikiLink	dbpedia:Fred_Cohenhttp://dbpedia.org/resource/Fred_Cohen Computer virushttp://dbpedia.org/resource/Computer_virus
inDataset	proxy:http/dbpedia.org/resource/Compression_virushttp://ods-qa.openlinksw.com:8896/about/id/http/dbpedia.org/resource/Compression_virus