【shell】sed后向引用替换文本

  原文
        <server name="92服"  port="10092" os="android"  hidden="false" recommendrate="0" newport="" zoneid="" tabname="地区服"/>
        <server name="93服"  port="10093" os="android"  hidden="false" recommendrate="0" newport="" zoneid="" tabname="地区服"/>
        <server name="94服"  port="10094" os="android"  hidden="false" recommendrate="0" newport="" zoneid="" tabname="地区服"/>
        <server name="95服"  port="10095" os="android"  hidden="false" recommendrate="0" newport="" zoneid="" tabname="地区服"/>
        <server name="96服"  port="10096" os="android"  hidden="false" recommendrate="0" newport="" zoneid="" tabname="地区服"/>

       变为
         <server name="92服"  port="10092" os="android"  hidden="false" recommendrate="0" newport="" zoneid="10092" tabname="地区服"/>
        <server name="93服"  port="10093" os="android"  hidden="false" recommendrate="0" newport="" zoneid="10092" tabname="地区服"/>
        <server name="94服"  port="10094" os="android"  hidden="false" recommendrate="0" newport="" zoneid="10092" tabname="地区服"/>
        <server name="95服"  port="10095" os="android"  hidden="false" recommendrate="0" newport="" zoneid="10092" tabname="地区服"/>
        <server name="96服"  port="10096" os="android"  hidden="false" recommendrate="0" newport="" zoneid="10092" tabname="地区服"/>

     需求就是将zoneid根据port填上

[root]$ cat setZone.txt  | sed -e ‘s/\(port="\)\([0-9]+\)\(.*\)\(zoneid="\)/\1\2\3\4\2/g‘
<server name="92服"  port="10092" os="android"  hidden="false" recommendrate="0" newport="" zoneid="" tabname="地区服"/>
<server name="93服"  port="10093" os="android"  hidden="false" recommendrate="0" newport="" zoneid="" tabname="地区服"/>
<server name="94服"  port="10094" os="android"  hidden="false" recommendrate="0" newport="" zoneid="" tabname="地区服"/>
<server name="95服"  port="10095" os="android"  hidden="false" recommendrate="0" newport="" zoneid="" tabname="地区服"/>
<server name="96服"  port="10096" os="android"  hidden="false" recommendrate="0" newport="" zoneid="" tabname="地区服"/>