Regex 使用SED在文件中插入换行符

我在一个文本文件中转储了所有grizzly step主机。以下是文件的外观：

（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89..b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：坏主机89.b.c.d（表：网络对象）名称：Bad-Host_89.b.c.d

如您所见，这是一个巨大的运行。我希望使用sed来匹配

（T

，并在匹配的字符串之前插入换行符。基本上，我希望输出如下所示：

(Table: network_objects) Name: Bad-Host_89..b.c.d  
(Table: network_objects) Name: Bad-Host_89..b.c.d 
...

AMD$ sed 's/(T/\n&/g' File

(Table: network_objects) Name: Bad-Host_89.b.c.d
(Table: network_objects) Name: Bad-Host_89.b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89.b.c.d

就这样,

(Table: network_objects) Name: Bad-Host_89..b.c.d  
(Table: network_objects) Name: Bad-Host_89..b.c.d 
...

AMD$ sed 's/(T/\n&/g' File

(Table: network_objects) Name: Bad-Host_89.b.c.d
(Table: network_objects) Name: Bad-Host_89.b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89..b.c.d
(Table: network_objects) Name: Bad-Host_89.b.c.d

---

也许这是一个GNU扩展-我的sed插入了一个文本

n

，我不是唯一的一个-请参阅