合并相同的模式之间的多条线路到使用一行AWK / SED [英] Merge multiple lines between same pattern into a single line using awk/sed

问题描述

我有一些信息，一些日志文件如下

I have some log files with some information as below

2016-03-18 00:07:43,482 SOME ERROR 
OCCURED
API 
LINE INFO
2016-03-18 00:07:44,482 OCCURED
authentication failure
2016-03-18 00:07:45,482 ERROR OCCURED
2016-03-18 00:07:46,482 NOT IMP OCCURED

所需的输出

2016-03-18 00:07:43,482 SOME ERROR OCCURED API LINE INFO
2016-03-18 00:07:44,482 OCCURED authentication failure
2016-03-18 00:07:45,482 ERROR OCCURED
2016-03-18 00:07:46,482 NOT IMP OCCURED

这意味着我想所有的线合并2016年3月18日之间。

That means I want to merge all the lines between 2016-03-18

我想每一行开始与2016年3月18日为图案。

I want every line to start with the 2016-03-18 as the pattern.

有人能帮助我做到这一点使用shell脚本preferably用awk /桑达？

Could someone help me do this using shell scripting preferably using awk/Sed?

推荐答案

您可以使用以下 AWK 命令：

awk '
    /^[0-9]{4}(-[0-9]{2}){2}/ && line {print line; line=""}
    {line = line ? line" "$0 : $0}
    END {print line}
' file 

---

更新

原来，有些 AWK 的实施不支持 {N} 量词。例如 mawk 。

It turned out that some awk implementations doesn't support {n} quantifiers. For example mawk.

在这种情况下，你必须写命令是这样的：

In that case you'll have to write the command like this:

mawk '
    /^[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]/ && line {print line; line=""}
    {line = line ? line" "$0 : $0}
    END {print line}
' file

这篇关于合并相同的模式之间的多条线路到使用一行AWK / SED的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！