tldr/pages/common/xmllint.md

xmllint

XML parser and linter.

• Return all nodes named "foo":

xmllint --xpath "//{{foo}}" {{source_file.xml}}

• Return as string the contents of first node named "foo":

xmllint --xpath "string//{{foo}}" {{source_file.xml}}

• Use other xpath (a syntax for navigating xml trees) expressions for more options in navigating xml tree:

xmllint --xpath "{{xpath_expression}}" {{source_file.xml}}

• Return human-readable (indented) xml from file:

xmllint --format {{source_file.xml}}

• Check that XML meets requirements of its built-in doctype. This is the part starting with <!DOCTYPE...>:

xmllint --valid {{source_file.xml}}

• Validate XML against DTD schema hosted online:

xmllint --dtdvalid {{URL}} {{source_file.xml}}