Grab XML attributes from file with bash script

Shell Programming and Scripting
1

Hi,

I need to grab attributes from the XML file with pure bash script.

So I have the following XML file with a root element `Group` and lots of `Person` elements, every of them has `id` and `username` attributes. `id` is unique value for each element:

<?xml version="1.0" encoding="UTF-8"?>
<Group id="RW_8987"
       dept_id="D_12"
       main="false">

    <Person id="P_0001"
            email="email0001@example.com"
            username="person_0001"
            password="pass_0001"/>

    <Person id="P_0002"
            email="email0002@example.com"
            username="person_0002"
            password="pass_0002"/>

    <!--  ...  -->
</Group>

And I need to use bash script to extract the `id` and `username` attributes into some key-value structure:

P_0001=person_0001
P_0002=person_0002

Checked other related answers, but most of them suggest to use some XML parsers like xmllint. But unfortunately I do not have them on the target machine.

Can you kindly suggest what how I can achieve this. Thanks in advance.

2

Any attempts / ideas / thoughts from your side?