system — runs a shell command from SQL
system
( |
in command varchar
); |
The system function will run a shell command from SQL. The shell command is executed in the server's current directory as the user that owns the database server process.
This function is available to dba users only. Since this is a security risk this feature is normally disabled. It can be enabled by setting the AllowOSCalls setting in virtuoso.ini to 1.
This HTML5 document contains 16 embedded RDF statements represented using HTML+Microdata notation.
The embedded RDF content will be recognized by any processor of HTML5 Microdata.
| Prefix | Namespace IRI |
|---|---|
| n4 | http://docs.openlinksw.com/virtuoso/fn_system/ |
| schema | http://schema.org/ |
| n5 | http://creativecommons.org/licenses/by/4.0/deed. |
| rdf | http://www.w3.org/1999/02/22-rdf-syntax-ns# |
| n3 | http://www.openlinksw.com/# |
| xsdh | http://www.w3.org/2001/XMLSchema# |
This HTML document contains 16 embedded RDF statements represented using (X)HTML+RDFa notation.
The embedded RDF content will be recognized by any processor of (X)HTML+RDFa.
| Namespace Prefix | Namespace URI |
|---|---|
| xmlns:n4 | http://docs.openlinksw.com/virtuoso/fn_system/ |
| xmlns:schema | http://schema.org/ |
| xmlns:n5 | http://creativecommons.org/licenses/by/4.0/deed. |
| xmlns:rdf | http://www.w3.org/1999/02/22-rdf-syntax-ns# |
| xmlns:n3 | http://www.openlinksw.com/# |
| xmlns:xsdh | http://www.w3.org/2001/XMLSchema# |
| Subject | Predicate | Object |
|---|---|---|
| n4: | rdf:type | schema:TechArticle |
| n4: | rdf:type | schema:APIReference |
| n4: | schema:name | system |
| n4: | schema:copyrightHolder | _:vb80204 |
| n4: | schema:datePublished | 2016-09-09 16:16:54 |
| n4: | schema:headline | system |
| n4: | schema:keywords | OpenLink,Virtuoso,database,RDBMS,relational,SQL,RDF,triple store,linked data,linked open data,Big Data,function,API,reference,system |
| n4: | schema:license | n5:en_US |
| n4: | schema:publisher | _:vb80203 |
| n4: | schema:url | n4: |
| _:vb80203 | rdf:type | schema:Organization |
| _:vb80203 | schema:name | OpenLink Software |
| _:vb80203 | schema:url | n3:this |
| _:vb80204 | rdf:type | schema:Organization |
| _:vb80204 | schema:name | OpenLink Software |
| _:vb80204 | schema:url | n3:this |