How can I modify an XML file using shell?

To modify an XML file, the sed command in a shell script can be used. The sed command is capable of editing files, including operations such as replacing, deleting, and inserting text.

Here is an example of using the sed command to modify an XML file:

#!/bin/bash

# 将XML文件中的<version>标签修改为新的版本号
new_version="2.0.0"
sed -i "s|<version>.*</version>|<version>$new_version</version>|" file.xml

# 将XML文件中的某个属性值修改为新的值
new_value="new_value"
sed -i "s|attribute=\".*\"|attribute=\"$new_value\"|" file.xml

# 添加一个新的子节点到XML文件中
new_node="<newNode>value</newNode>"
sed -i "s|<parentNode>|<parentNode>$new_node|" file.xml

# 删除XML文件中的某个节点
sed -i "/<nodeToDelete>/d" file.xml

In the above examples, the “-i” option in the sed command indicates that modifications are made directly to the original file. By using regular expressions, corresponding modifications can be made to XML files. When actually using it, make appropriate modifications according to specific needs.