virsh echo command displays the specified argument in the specified format. The formats you can use are
--xml. Each argument queried is displayed separated by a space. Tthe
--shell option generates output that is formatted in single quotes where needed, so it is suitable for copying and pasting into the bash mode as a command. If the
--xml argument is used, the output is formatted for use in an XML file, which can then be saved or used for guest's configuration.