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xmllint

 
XML parser and linter that supports XPath, a syntax for navigating XML trees. More information: https://manned.org/xmllint.
 
  • Return all nodes (tags) named "foo":
     
    xmllint --xpath "//{{foo}}" {{source_file.xml}}
     
  • Return the contents of the first node named "foo" as a string:
     
    xmllint --xpath "string(//{{foo}})" {{source_file.xml}}
     
  • Return the href attribute of the second anchor element in an HTML file:
     
    xmllint --html --xpath "string(//a[2]/@href)" webpage.xhtml
     
  • Return human-readable (indented) XML from file:
     
    xmllint --format {{source_file.xml}}
     
  • Check that an XML file meets the requirements of its DOCTYPE declaration:
     
    xmllint --valid {{source_file.xml}}
     
  • Validate XML against DTD schema hosted online:
     
    xmllint --dtdvalid {{URL}} {{source_file.xml}}

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