xml1.xml<app>    <bbb>        <jjj>test1</jjj>     </bbb>     <bbb>           <jjj>test2</jjj>    </bbb></app>xml2.xmlfile2 xml2.xml<app>    <bbb>          <jjj>test2</jjj>    </bbb>    <bbb>        <jjj>test3</jjj>    </bbb>    <bbb>        <jjj>test4</jjj>    </bbb></app>Can I combine 2 file to 1 file as below?<app>     <bbb>        <jjj>test1</jjj>     </bbb>    <bbb>          <jjj>test2</jjj>    </bbb>    <bbb>        <jjj>test3</jjj>    </bbb>    <bbb>        <jjj>test4</jjj>    </bbb></app>
How to add tag for xml from file exist using shell linux
linux;shell;scripting;php;xml