在Shell脚本中使用sed命令在XML文件中添加XML元素 [英] Adding XML element in XML file using sed command in shell script

问题描述

我正在使用sed命令将xml元素插入到现有的xml文件中.

I am using sed command to insert an xml element into the existing xml file.

我的xml文件为

<Students>
    <student>
        <name>john</>
        <id>123</id>
    </student>
    <student>
        <name>mike</name>
        <id>234</id>
    </student>
</Students>

我要添加新元素

    <student>
        <name>NewName</name>
        <id>NewID</id>
    </student>

所以我的新xml文件将是

So my new xml file will be

<Students>
    <student>
        <name>john</>
        <id>123</id>
    </student>
    <student>
        <name>mike</name>
        <id>234</id>
    </student>
    <student>
        <name>NewName</name>
        <id>NewID</id>
    </student>
</Students>

为此，我将shell脚本编写为

For this I have written shell script as

#! /bin/bash

CONTENT="<student>
            <name>NewName</name>
            <id>NewID</id>
        </student>"

#sed -i.bak '/<\/Students>/ i \ "$CONTENT" /root/1.xml
sed -i.bak '/<\/Students>/ i \'$CONTENT'/' /root/1.xml

我收到错误消息

sed: can't read <name>NewName</name>: No such file or directory
sed: can't read <id>NewID</id>: No such file or directory
sed: can't read </student>: No such file or directory

并且在xml文件中，仅添加了<student>. 其余元素未添加. 有人知道为什么会出现这个错误吗?

And in the xml file, only <student> is added. The remaining elements are not added. Does anyone know why this error?

推荐答案

更改此内容:

CONTENT="<student>
            <name>NewName</name>
            <id>NewID</id>
        </student>"

对此:

CONTENT="<student>\n<name>NewName</name>\n<id>NewID</id>\n</student>"

然后:

C=$(echo $CONTENT | sed 's/\//\\\//g')
sed "/<\/Students>/ s/.*/${C}\n&/" file

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