xmlstarlet - 1.6.1-4+b1 main

XMLStarlet is a set of command line utilities (tools) which can be used to
transform, query, validate, and edit XML documents and files using simple set
of shell commands in similar way it is done for plain text files using
UNIX grep, sed, awk, diff, patch, join, etc commands.
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This set of command line utilities can be used by those who deal with many XML
documents on UNIX shell command prompt as well as for automated XML processing
with shell scripts.
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The toolkit's feature set includes options to:
Check or validate XML files (simple well-formedness check, DTD, XSD, RelaxNG)
Calculate values of XPath expressions on XML files (such as running sums, etc)
Search XML files for matches to given XPath expressions
Apply XSLT stylesheets to XML documents (including EXSLT support, and passing
parameters to stylesheets)
Query XML documents (ex. query for value of some elements of attributes,
sorting, etc)
Modify or edit XML documents (ex. delete some elements)
Format or "beautify" XML documents (as changing indentation, etc)
Fetch XML documents using http:// or ftp:// URLs
Browse tree structure of XML documents (in similar way to 'ls' command for
directories)
Include one XML document into another using XInclude
XML c14n canonicalization
Escape/unescape special XML characters in input text
Print directory as XML document
Convert XML into PYX format (based on ESIS - ISO 8879), and vice versa