XMLStarlet: Editing a node with specific attribute value

Question

I want to edit the value of the node "title" in the following XML file, using XMLStarlet. Only the title node which is a child node of locale with attribute name="de-DE" should be edited.

<?xml version="1.0" encoding="UTF-8"?>
    <package xmlns="http://apple.com/itunes/importer" version="software5.4">
      <software>
        <software_metadata app_platform="ios">
          <versions>
            <version string="1.1.1">
              <locales>
                <locale name="de-DE">
                  <title>title_DE</title>
                </locale>
                <locale name="en-US">
                  <title>title_EN</title>
                </locale>
              </locales>
            </version>
          </versions>
        </software_metadata>
      </software>
    </package>

I tried the following command, but it does nothing:

xml ed -N x="http://apple.com/itunes/importer" -u '/x:package/x:software/x:software_metadata/x:versions/x:version/x:locales/x:locale[@name='de-DE']/x:title' -v 'new titel' metadata.xml

Using the same XPath query for selecting works fine:

xml sel -N x="http://apple.com/itunes/importer" -t -v "/x:package/x:software/x:software_metadata/x:versions/x:version/x:locales/x:locale[@name='de-DE']/x:title" metadata.xml

Does anybody know why selecting is working but editing is not?

sebisnow · Accepted Answer · 2016-04-29 13:08:09Z

2

In your edit statement you should also use double quotes on the outer definition. The way it is now @name='de-DE' is the problem because the single quote ends the command.

xml ed -N x="http://apple.com/itunes/importer" -u '/x:package/x:software/x:software_metadata/x:versions/x:version/x:locales/x:locale[@name="de-DE"]/x:title' -v 'new titel' metadata.xml

My general preference is to use single quotes first and on the inside use double quotes but since both works it is up to choice as long as consistency is kept.

answered Apr 29, 2016 at 13:08

sebisnow

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