到目前为止，我已经使用 sed、awk、while 循环等在 bash 中完成了一些简单的事情。
我接下来要做的事情要复杂得多，我不知道如何开始。
我有一个 XML 文件，我需要根据 XML 文件中的其他信息向其中添加元素。
我应该使用什么工具来实现这一点？ while 循环，数组，sed？
获取复合 ID 列表并将它们存储在数组中
对于每个复合 ID，搜索与复合 ID 匹配的所有单独 ID，并将每个单独 ID 的结果存储在数组中。
a. 如果任何一个单独的 ID 具有正向标签，则在 XML 文件中创建一个新的并将其设置为正向。
b. 如果所有单独的 ID 都具有负数标签，则在 XML 文件中创建一个新的并将其设置为负数。
例如，这是原始 XML 文件的示例：
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<waterSample>
<HeaderInformation>
<ReportSerialNumber>987754</ReportSerialNumber>
</HeaderInformation>
<sample>
<site>40</site>
<sampleid>040-2016-12387</sampleid>
<productcode>AQUA</productcode>
<productdescription>10ozAquafina</productdescription>
<testcode>Oxygen</testcode>
<testdescription>Test for Oxygen</testdescription>
<sequence>0</sequence>
<sampledate>2016-05-27T16:03:00-05:00</sampledate>
<prefix></prefix>
<addendum></addendum>
<compositeid></compositeid>
<samplename>Water</samplename>
<sampledescription>Tasty Water</sampledescription>
<labsampleid>789-879717-001</labsampleid>
<receivedby>John Doe</receivedby>
<receivetime>2016-05-28T10:49:43-04:00</receivetime>
<reporttime>2016-05-30T11:30:11-04:00</reporttime>
<result>Negative</result>
<units>10oz</units>
</sample>
<sample>
<site>40</site>
<sampleid>040-2016-12388</sampleid>
<productcode>AQUA</productcode>
<productdescription>10ozAquafina</productdescription>
<testcode>Oxygen</testcode>
<testdescription>Test for Oxygen</testdescription>
<sequence>0</sequence>
<sampledate>2016-05-27T16:03:00-05:00</sampledate>
<prefix></prefix>
<addendum></addendum>
<compositeid>78979</compositeid>
<samplename>Water</samplename>
<sampledescription>Tasty Water</sampledescription>
<labsampleid>789-879717-002</labsampleid>
<receivedby>John Doe</receivedby>
<receivetime>2016-05-28T10:49:43-04:00</receivetime>
<reporttime>2016-05-30T11:30:11-04:00</reporttime>
<result>Negative</result>
<units>10oz</units>
</sample>
<sample>
<site>40</site>
<sampleid>040-2016-12389</sampleid>
<productcode>AQUA</productcode>
<productdescription>10ozAquafina</productdescription>
<testcode>Oxygen</testcode>
<testdescription>Test for Oxygen</testdescription>
<sequence>0</sequence>
<sampledate>2016-05-27T16:03:00-05:00</sampledate>
<prefix></prefix>
<addendum></addendum>
<compositeid>78979</compositeid>
<samplename>Water</samplename>
<sampledescription>Tasty Water</sampledescription>
<labsampleid>789-879717-003</labsampleid>
<receivedby>John Doe</receivedby>
<receivetime>2016-05-28T10:49:43-04:00</receivetime>
<reporttime>2016-05-30T11:30:11-04:00</reporttime>
<result>Positive</result>
<units>10oz</units>
</sample>
</waterSample>
代码运行后文件的样子如下：
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<waterSample>
<HeaderInformation>
<ReportSerialNumber>987754</ReportSerialNumber>
</HeaderInformation>
<sample>
<site>40</site>
<sampleid>040-2016-12387</sampleid>
<productcode>AQUA</productcode>
<productdescription>10ozAquafina</productdescription>
<testcode>Oxygen</testcode>
<testdescription>Test for Oxygen</testdescription>
<sequence>0</sequence>
<sampledate>2016-05-27T16:03:00-05:00</sampledate>
<prefix></prefix>
<addendum></addendum>
<compositeid></compositeid>
<samplename>Water</samplename>
<sampledescription>Tasty Water</sampledescription>
<labsampleid>789-879717-001</labsampleid>
<receivedby>John Doe</receivedby>
<receivetime>2016-05-28T10:49:43-04:00</receivetime>
<reporttime>2016-05-30T11:30:11-04:00</reporttime>
<result>Negative</result>
<units>10oz</units>
</sample>
<sample>
<site>40</site>
<sampleid>040-2016-12388</sampleid>
<productcode>AQUA</productcode>
<productdescription>10ozAquafina</productdescription>
<testcode>Oxygen</testcode>
<testdescription>Test for Oxygen</testdescription>
<sequence>0</sequence>
<sampledate>2016-05-27T16:03:00-05:00</sampledate>
<prefix></prefix>
<addendum></addendum>
<compositeid>78979</compositeid>
<samplename>Water</samplename>
<sampledescription>Tasty Water</sampledescription>
<labsampleid>789-879717-002</labsampleid>
<receivedby>John Doe</receivedby>
<receivetime>2016-05-28T10:49:43-04:00</receivetime>
<reporttime>2016-05-30T11:30:11-04:00</reporttime>
<result>Negative</result>
<units>10oz</units>
</sample>
<sample>
<site>40</site>
<sampleid>040-2016-12389</sampleid>
<productcode>AQUA</productcode>
<productdescription>10ozAquafina</productdescription>
<testcode>Oxygen</testcode>
<testdescription>Test for Oxygen</testdescription>
<sequence>0</sequence>
<sampledate>2016-05-27T16:03:00-05:00</sampledate>
<prefix></prefix>
<addendum></addendum>
<compositeid>78979</compositeid>
<samplename>Water</samplename>
<sampledescription>Tasty Water</sampledescription>
<labsampleid>789-879717-003</labsampleid>
<receivedby>John Doe</receivedby>
<receivetime>2016-05-28T10:49:43-04:00</receivetime>
<reporttime>2016-05-30T11:30:11-04:00</reporttime>
<result>Positive</result>
<units>10oz</units>
</sample>
<sample>
<site>40</site>
<sampleid>040-2016-78979</sampleid>
<productcode>AQUA</productcode>
<productdescription>10ozAquafina</productdescription>
<testcode>Oxygen</testcode>
<testdescription>Test for Oxygen</testdescription>
<sequence>0</sequence>
<sampledate>2016-05-27T16:03:00-05:00</sampledate>
<prefix></prefix>
<addendum></addendum>
<compositeid></compositeid>
<samplename>Water</samplename>
<sampledescription>Tasty Water</sampledescription>
<labsampleid></labsampleid>
<receivedby>John Doe</receivedby>
<receivetime>2016-05-28T10:49:43-04:00</receivetime>
<reporttime>2016-05-30T11:30:11-04:00</reporttime>
<result>Positive</result>
<units>10oz</units>
</sample>
</waterSample>