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XML parser and linter that supports XPath, a syntax for navigating XML trees. More information:

  • 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}}