I have this original.xml file tree:

<root>
    <element1>
        <name>Hi</name>
    </element1>
    <element2>
        <name>Beer</name>
    </element2>
    <element2>
        <name>Balloon</name>
        <element2_1>
            <name>John</name>
        </element2_1>
    </element2> 
</root>

I am trying to add element2_2 under element2 parent. I have tried to make an insert based on “xsl:element match” as following:

cat <<EOT > insert.xsl
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>

<xsl:template match="node()|@*">
    <xsl:copy>
        <xsl:apply-templates select="node()|@*"/>
    </xsl:copy>
</xsl:template>

<xsl:template match="root/element2[@name='Balloon']">
    <xsl:copy>
        <xsl:apply-templates select="node()|@*"/>
    </xsl:copy>
    <xsl:element name="element2_2">
        <xsl:attribute name="name">Edward</xsl:attribute>
    </xsl:element>
</xsl:template>
</xsl:stylesheet>
EOT

And then use the xsltproc to insert it the insert.xsl into original.xml based on a specific location(tag and element) on Linux:

xsltproc insert.xsl original.xml > ./updated.xml

Unfortunately nothing happens. The only thing I found was working was changing the match pattern to root (“/*”) and redact the xsl:element to actual .xml element, which resulted in concatenating the element after root(not something useful).