<transform output="/etc/hosts">
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<xsl:for-each select="a" >
<xsl:value-of select="b"/>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
</transform>