command line xml parser ( free, open source)

located @ http://xmlstar.sourceforge.net/

XMLStarlet Toolkit: Command line utilities for XML
Usage: xml []  []
where  is one of:
  ed    (or edit)      - Edit/Update XML document(s)
  sel   (or select)    - Select data or query XML document(s) (XPATH, etc)
  tr    (or transform) - Transform XML document(s) using XSLT
  val   (or validate)  - Validate XML document(s) (well-formed/DTD/XSD/RelaxNG)
  fo    (or format)    - Format XML document(s)
  el    (or elements)  - Display element structure of XML document
  c14n  (or canonic)   - XML canonicalization
  ls    (or list)      - List directory as XML
  esc   (or escape)    - Escape special XML characters
  unesc (or unescape)  - Unescape special XML characters
  pyx   (or xmln)      - Convert XML into PYX format (based on ESIS - ISO 8879)
  p2x   (or depyx)     - Convert PYX into XML
 are:
  --version            - show version
  --help               - show help
Wherever file name mentioned in command help it is assumed
that URL can be used instead as well.

Type: xml  --help  for command help

XMLStarlet is a command line toolkit to query/edit/check/transform
XML documents (for more information see http://xmlstar.sourceforge.net/)

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