Extract values from XML using xmlstarlet
问题 How can I extract using xmlstarlet the local port from this xml example: <?xml version="1.0"?> <opmn xmlns="http://www.oracle.com/ias-instance"> <notification-server> <port local="6101" remote="6200" request="6003"/> <log-file path="$ORACLE_HOME\opmn\logs\ons.log" level="4" rotation-size="1500000"/> <ssl enabled="true" wallet-file="$ORACLE_HOME\opmn\conf\ssl.wlt\default"/> </notification-server> </opmn> 回答1: xml sel -N ias=http://www.oracle.com/ias-instance -t -v //ias:port/@local example.xml