How to change empty xml tags in a file in unix

Question

I have a XML file in unix server. I want to change a file like :

all the empty tags have to be replaced like below example. This is just an example, file can have any number of empty tags with different names.

    <abc/>         
    <xyz>38475938994</xyz>
    <def/>
    to below file
    <abc></abc>
    <xyz>38475938994</xyz>
    <def></def>

Answer 1

sed approach:

sed -E 's#<([^/ ]+)/>#<\1></\1>#g' file.xml

The output:

<abc></abc>         
<xyz>38475938994</xyz>
<def></def>