How to remove text between a tag from XML or HTML with SED
This will remove the users tag and everything in between the users tag:
sed -i .bak '/<users type="array">/,/<\/users>/d' users.xml
A backup will be created named users.xml.bak.
If you want to select only specific tags use this:
sed -n -e '/<private-parts>/,/<\/private-parts>/p' e users.xml
For more advanced XML processing use: * XMLStarlet * xml-coreutiles * xml2/2xml * Your imagination.