Complete MODS => OAI DC transformation

dublincore.xml

<?xml version="1.0"?>
<oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Do Re Mi</dc:title>
</oai_dc:dc>

mods.xml

<xml>
    <mods>
        <titleInfo>
            <title>Do Re Mi</title>
        </titleInfo>
    </mods>
</xml>

process.sh

#!/usr/bin/env bash
# to actually transform the file you need some kind of program that can interpret an XSLT
# transform & `xsltproc` is available on Mac/Linux for this purpose, this is a shell script
# you could run on the command line to accomplish the transformation
xsltproc transform.xsl mods.xml > dublincore.xml

transform.xsl

<?xml version="1.0" encoding="UTF-8"?>
<xsl:transform version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" indent="yes" />
    <xsl:template match="/xml">
        <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/">

            <xsl:for-each select="mods/titleInfo/title">
                <dc:title>
                    <xsl:value-of select="mods/titleInfo/title" />
                </dc:title>
            </xsl:for-each>

        </oai_dc:dc>
    </xsl:template>
</xsl:transform>