Format an XML document, omitting the XML declaration

Format an XML document.
More information: <http://xmlstar.sourceforge.net/docs.php>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

xml format --omit-decl {{path\to\input.xml|URI}} > {{path/to/output.xml}}

click the source code to copy install xml format on any operating system with command-not-found.com