How do I insert an element directly after another element with XMLStarlet?

问题

With this example XML:

<rootnode>
  <element-a />
  <element-b />
  <element-d />
  <element-e />
</rootnode>

How do I insert element <element-c/> directly after the element <element-b/> using XMLStarlet?

回答1:

xml ed -i (or --insert) will put the it before the node, xml ed -a (or --append) will put it after, so you can use either one of:

xml ed -i /rootnode/element-d -t elem -n element-c -v "" file.xml
xml ed -a /rootnode/element-b -t elem -n element-c -v "" file.xml

来源：https://stackoverflow.com/questions/7473720/how-do-i-insert-an-element-directly-after-another-element-with-xmlstarlet