<?xml version="1.0"?> <interfaceDefinition> <node name="restart"> <children> <node name="ntp"> <properties> <help>Restart NTP service</help> </properties> <command>if cli-shell-api existsActive service ntp; then sudo systemctl restart chrony.service; else echo "Service NTP not configured"; fi</command> </node> </children> </node> </interfaceDefinition>