这样的sed命令如何写？

fbt045

各位高手，我有如下文件：
[test@ ~]$ cat data3.txt
On Tuesday, the Linux System
Administrator's group meeting will be held.
All System Administrators should attend.
Thank you for your attendance System
Administrator

想替换掉所有System Administrator为Desktop User，但以下命令却没有替换最后一个符合的字符串，请问这是什么问题，需要怎么改命令？多谢哈
[test@ ~]$ sed 'N; s/System.Administrator/Desktop User/g' data3.txt
On Tuesday, the Linux Desktop User's group meeting will be held.
All Desktop Users should attend.
Thank you for your attendance System
Administrator

allenshen_99

sed -e 's/System/Desktop/g' -e 's/Administrator/User/g' data3.txt

allenshen_99

sed 'N;s/System.Administrator/Desktop User/g; P;D' data3.txt

dm9901

回复 1# fbt045

sed -i 's#System Administrator#Desktop User#g' data3.txt