xmllint man page on Gentoo

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XMLLINT(1)			xmllint Manual			    XMLLINT(1)

       xmllint - command line XML tool

       xmllint [--version | --debug | --shell | --xpath "XPath_expression" |
	       --debugent | --copy | --recover | --noent | --noout | --nonet |
	       --path "PATH(S)" | --load-trace | --htmlout | --nowrap |
	       --valid | --postvalid | --dtdvalid URL | --dtdvalidfpi FPI |
	       --timing | --output FILE | --repeat | --insert | --compress |
	       --html | --xmlout | --push | --memory | --maxmem NBBYTES |
	       --nowarning | --noblanks | --nocdata | --format |
	       --encode ENCODING | --dropdtd | --nsclean | --testIO |
	       --catalogs | --nocatalogs | --auto | --xinclude |
	       --noxincludenode | --loaddtd | --dtdattr | --stream | --walker
	       | --pattern PATTERNVALUE | --chkregister | --relaxng SCHEMA |
	       --schema SCHEMA | --c14n] {XML-FILE(S)... | -}

       xmllint --help

       The xmllint program parses one or more XML files, specified on the
       command line as XML-FILE (or the standard input if the filename
       provided is - ). It prints various types of output, depending upon the
       options selected. It is useful for detecting errors both in XML code
       and in the XML parser itself.

       xmllint is included in libxml(3).

       xmllint accepts the following options (in alphabetical order):

	   Generate a small document for testing purposes.

	   Use the SGML catalog(s) from SGML_CATALOG_FILES. Otherwise XML
	   catalogs starting from /etc/xml/catalog are used by default.

	   Turn on node registration. Useful for developers testing libxml(3)
	   node tracking code.

	   Turn on gzip(1) compression of output.

	   Test the internal copy implementation.

	   Use the W3C XML Canonicalisation (C14N) to serialize the result of
	   parsing to stdout. It keeps comments in the result.

       --dtdvalid URL
	   Use the DTD specified by an URL for validation.

       --dtdvalidfpi FPI
	   Use the DTD specified by a Formal Public Identifier FPI for
	   validation, note that this will require a catalog exporting that
	   Formal Public Identifier to work.

	   Parse a file and output an annotated tree of the in-memory version
	   of the document.

	   Debug the entities defined in the document.

	   Remove DTD from output.

	   Fetch external DTD and populate the tree with inherited attributes.

       --encode ENCODING
	   Output in the given encoding.

	   Reformat and reindent the output. The XMLLINT_INDENT environment
	   variable controls the indentation. The default value is two spaces
	   " ").

	   Print out a short usage summary for xmllint.

	   Use the HTML parser.

	   Output results as an HTML file. This causes xmllint to output the
	   necessary HTML tags surrounding the result tree output so the
	   results can be displayed/viewed in a browser.

	   Test for valid insertions.

	   Fetch an external DTD.

	   Display all the documents loaded during the processing to stderr.

       --maxmem NNBYTES
	   Test the parser memory support.  NNBYTES is the maximum number of
	   bytes the library is allowed to allocate. This can also be used to
	   make sure batch processing of XML files will not exhaust the
	   virtual memory of the server running them.

	   Parse from memory.

	   Drop ignorable blank spaces.

	   Do not use any catalogs.

	   Substitute CDATA section by equivalent text nodes.

	   Substitute entity values for entity references. By default, xmllint
	   leaves entity references in place.

	   Do not use the Internet to fetch DTDs or entities.

	   Suppress output. By default, xmllint outputs the result tree.

	   Do not emit warnings from the parser and/or validator.

	   Do not output HTML doc wrapper.

	   Do XInclude processing but do not generate XInclude start and end

	   Remove redundant namespace declarations.

       --output FILE
	   Define a file path where xmllint will save the result of parsing.
	   Usually the programs build a tree and save it on stdout, with this
	   option the result XML instance will be saved onto a file.

       --path "PATH(S)"
	   Use the (space- or colon-separated) list of filesystem paths
	   specified by PATHS to load DTDs or entities. Enclose
	   space-separated lists by quotation marks.

       --pattern PATTERNVALUE
	   Used to exercise the pattern recognition engine, which can be used
	   with the reader interface to the parser. It allows to select some
	   nodes in the document based on an XPath (subset) expression. Used
	   for debugging.

	   Validate after parsing has completed.

	   Use the push mode of the parser.

	   Output any parsable portions of an invalid document.

       --relaxng SCHEMA
	   Use RelaxNG file named SCHEMA for validation.

	   Repeat 100 times, for timing or profiling.

       --schema SCHEMA
	   Use a W3C XML Schema file named SCHEMA for validation.

	   Run a navigating shell. Details on available commands in shell mode
	   are below (see the section called “SHELL COMMANDS”).

       --xpath "XPath_expression"
	   Run an XPath expression given as argument and print the result. In
	   case of a nodeset result, each node in the node set is serialized
	   in full in the output. In case of an empty node set the "XPath set
	   is empty" result will be shown and an error exit code will be

	   Use streaming API - useful when used in combination with --relaxng
	   or --valid options for validation of files that are too large to be
	   held in memory.

	   Test user input/output support.

	   Output information about the time it takes xmllint to perform the
	   various steps.

	   Determine if the document is a valid instance of the included
	   Document Type Definition (DTD). A DTD to be validated against also
	   can be specified at the command line using the --dtdvalid option.
	   By default, xmllint also checks to determine if the document is

	   Display the version of libxml(3) used.

	   Test the walker module, which is a reader interface but for a
	   document tree, instead of using the reader API on an unparsed
	   document it works on an existing in-memory tree. Used for

	   Do XInclude processing.

	   Used in conjunction with --html. Usually when HTML is parsed the
	   document is saved with the HTML serializer. But with this option
	   the resulting document is saved with the XML serializer. This is
	   primarily used to generate XHTML from HTML input.

       xmllint offers an interactive shell mode invoked with the --shell
       command. Available commands in shell mode include (in alphabetical

	   Display XML base of the node.

	   Leave the shell.

       cat NODE
	   Display the given node or the current one.

       cd PATH
	   Change the current node to the given path (if unique) or root if no
	   argument is given.

       dir PATH
	   Dumps information about the node (namespace, attributes, content).

       du PATH
	   Show the structure of the subtree under the given path or the
	   current node.

	   Leave the shell.

	   Show this help.

	   Display memory usage.

       load FILENAME
	   Load a new document with the given filename.

       ls PATH
	   List contents of the given path or the current directory.

	   Display the path to the current node.

	   Leave the shell.

       save FILENAME
	   Save the current document to the given filename or to the original

	   Check the document for errors.

       write FILENAME
	   Write the current node to the given filename.

	   SGML catalog behavior can be changed by redirecting queries to the
	   user's own set of catalogs. This can be done by setting the
	   SGML_CATALOG_FILES environment variable to a list of catalogs. An
	   empty one should deactivate loading the default /etc/sgml/catalog

	   XML catalog behavior can be changed by redirecting queries to the
	   user's own set of catalogs. This can be done by setting the
	   XML_CATALOG_FILES environment variable to a list of catalogs. An
	   empty one should deactivate loading the default /etc/xml/catalog

	   Setting the environment variable XML_DEBUG_CATALOG to non-zero
	   using the export command outputs debugging information related to
	   catalog operations.

	   Setting the environment variable XMLLINT_INDENT controls the
	   indentation. The default value is two spaces " ".

       xmllint return codes provide information that can be used when calling
       it from scripts.

	   No error


	   Error in DTD

	   Validation error

	   Validation error

	   Error in schema compilation

	   Error writing output

	   Error in pattern (generated when --pattern option is used)

	   Error in Reader registration (generated when --chkregister option
	   is used)

	   Out of memory error


       More information can be found at

       ·   libxml(3) web page http://www.xmlsoft.org/

       ·   W3C XSLT page http://www.w3.org/TR/xslt

       John Fleck <jfleck@inkstain.net>

       Ziying Sherwin <sherwin@nlm.nih.gov>

       Heiko Rupp <hwr@pilhuhn.de>

       Copyright © 2001, 2004

libxml2				    $Date$			    XMLLINT(1)

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