Linux 基于unix中的模式将单行拆分为多行

我在单行中有以下数据

输入

pid:1230 received at date 12/1/15 17:00:00:230,message ID:1200,Field1:anil,Field3:kumar,Field4:nitin,Field5:Rajat,Field6:Yogesh,Field7:Kishore,Field8:satya,pid:1230 sent message at date 12/1/15 17:00:00:232,message ID:1200,name1:anil,name3:kumar,name4:nitin,name5:Rajat,name6:Yogesh,name7:Kishore,name8:satya,pid:1230 Received message at date 12/1/15 17:00:00:232,message ID:1200,nkd1:anil,nkd3:kumar,nkd4:nitin,nkd5:Rajat,nkd6:Yogesh,nkd7:Kishore,nkd8:satya,pid:1230 sent at date 12/1/15 17:00:00:232,message ID:1200,Field1:anil,Field3:kumar,Field4:nitin,Field5:Rajat,Field6:Yogesh,Field7:Kishore,Field8:satya,pid:1230 received at date 12/1/15 17:00:00:230,message ID:1200,Field1:anil,Field3:kumar,Field4:nitin,Field5:Rajat,Field6:Yogesh,Field7:Kishore,Field8:satya,pid:1230 sent message at date 12/1/15 17:00:00:232,message ID:1200,name1:anil,name3:kumar,name4:nitin,name5:Rajat,name6:Yogesh,name7:Kishore,name8:satya,pid:1230 Received message at date 12/1/15 17:00:00:232,message ID:1200,nkd1:anil,nkd3:kumar,nkd4:nitin,nkd5:Rajat,nkd6:Yogesh,nkd7:Kishore,nkd8:satya,pid:1230 sent at date 12/1/15 17:00:00:232,message ID:1200,Field1:anil,Field3:kumar,Field4:nitin,Field5:Rajat,Field6:Yogesh,Field7:Kishore,Field8:satya

我想把单行线分成多行。如果字段包含“received at”，则我希望拆分为换行符。上面的单行可以拆分为两行

预期输出：

pid:1230 received at date 12/1/15 17:00:00:230,message ID:1200,Field1:anil,Field3:kumar,Field4:nitin,Field5:Rajat,Field6:Yogesh,Field7:Kishore,Field8:satya,pid:1230 sent message at date 12/1/15 17:00:00:232,message ID:1200,name1:anil,name3:kumar,name4:nitin,name5:Rajat,name6:Yogesh,name7:Kishore,name8:satya,pid:1230 Received message at date 12/1/15 17:00:00:232,message ID:1200,nkd1:anil,nkd3:kumar,nkd4:nitin,nkd5:Rajat,nkd6:Yogesh,nkd7:Kishore,nkd8:satya,pid:1230 sent at date 12/1/15 17:00:00:232,message ID:1200,Field1:anil,Field3:kumar,Field4:nitin,Field5:Rajat,Field6:Yogesh,Field7:Kishore,Field8:satya
pid:1230 received at date 12/1/15 17:00:00:230,message ID:1200,Field1:anil,Field3:kumar,Field4:nitin,Field5:Rajat,Field6:Yogesh,Field7:Kishore,Field8:satya,pid:1230 sent message at date 12/1/15 17:00:00:232,message ID:1200,name1:anil,name3:kumar,name4:nitin,name5:Rajat,name6:Yogesh,name7:Kishore,name8:satya,pid:1230 Received message at date 12/1/15 17:00:00:232,message ID:1200,nkd1:anil,nkd3:kumar,nkd4:nitin,nkd5:Rajat,nkd6:Yogesh,nkd7:Kishore,nkd8:satya,pid:1230 sent at date 12/1/15 17:00:00:232,message ID:1200,Field1:anil,Field3:kumar,Field4:nitin,Field5:Rajat,Field6:Yogesh,Field7:Kishore,Field8:satya

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你能帮帮我吗。谢谢。

你可以试试这个

sed

：

sed 's/,\(pid:[0-9]* received at\)/\n\1/g' yourfile

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看起来您真正想做的是在每次出现

pid:

之前插入一个换行符。不是每次出现pid时，我想在pid具有“received at”字符串时插入换行符。请您的问题向我们展示一个最小的示例，其中包含您输入数据的代表性示例。删除一些字段，使每行变短，并向我们展示一些不应插入换行符的位置（如果有）的示例，以及应该插入换行符的位置。谢谢。这很有效。