E:\develop>perl test.pl
line --> <?xml version="1.0" encoding="utf-8" ?>
line --> <?xml version="1.0" encoding="utf-8" ?>
line --> <configuration>
line --> <configuration>
line -->   <appSettings>
line -->   <appSettings>
line -->     <add key="ServiceId.suffix" value="_TEST" />
line -->     <add key="ServiceId.suffix" value="_YEPPA" />
line -->   </appSettings>
line -->   </appSettings>
line --> </configuration>
line --> </configuration>