Add an attribute using xmllint

I want to add an at开发者_如何学Gotribute to the tag, using xmllint. Can I do this is through xmllint?

Xmllint in not made to edit XML, so I think the answer is “no, you can't”.

To edit XML, you can use XMLStarlet, the syntax to add an attribute into existing XML document is:

xmlstarlet ed -L -i xpath -t attr -n name -v value file