= XMLStarlet =
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.

http://xmlstar.sourceforge.net/overview.php

Windows: http://sourceforge.net/projects/xmlstar/files/xmlstarlet/1.6.1/xmlstarlet-1.6.1-win32.zip/download

Source code: http://sourceforge.net/p/xmlstar/code/ci/master/tree/

== SlackBuild ==
SlackBuild: http://slackbuilds.org/repository/14.1/development/xmlstarlet/

 * cd /tmp
 * wget http://slackbuilds.org/slackbuilds/14.1/development/xmlstarlet.tar.gz
 * tar xvzf xmlstarlet.tar.gz
 * cd xmlstarlet
 * wget http://downloads.sourceforge.net/xmlstar/xmlstarlet-1.6.1.tar.gz
 * ./xmlstarlet.SlackBuild 
 * installpkg  /tmp/xmlstarlet-1.6.1-i486-1_SBo.tgz

32 bit package: [[attachment:xmlstarlet-1.6.1-i486-1_SBo.tgz]]

== Examples ==

Sample teste.xml  XML with errors
{{{
<teste>
<a></a></a>
</teste>
</teste>
}}}

Command 
{{{
$ xml val -e -w teste.xml
teste.xml:2.12: Opening and ending tag mismatch: teste line 1 and a
<a></a></a>
           ^
teste.xml - invalid
}}}