用于检查文件中是否存在段落/行流的Shell脚本 [英] Shell script to check if a paragraph/stream of lines exist in a file

问题描述

我最近必须编写一个bash脚本来检查文件中是否存在垂直段落. 该文件的内容是.

I recently got to write a bash script to check if a perticular paragraph exist in a file. Content of the file is.

出版了1EO's
保存完成
节省贸易节省贸易成功 用于MCR的56945458 | 220841 | b:来自来源:ICE Tradecapture API的CMDTY 重试计数:0(从这一行中，我们检查公司名称-CMDTY)

Published 1EO's
Save completed
Trade saving save successful for trade 56945458|220841|b for MCR: CMDTY from source:ICE Tradecapture API retry count: 0 (From this line we check Company Name – CMDTY)

发布了4EO's
保存完成
节省贸易节省贸易成功 5666688 | 000 | b对于MCR:CMDTY，来源:ICE

Published 4EO's
Save completed
Trade saving save successful for trade 5666688|000|b for MCR: CMDTY from source:ICE

出版了1EO's
保存完成
节省贸易节省贸易成功 用于MCR的56945458 | 220841 | b:来自来源:ICE Tradecapture API的CMDTY 重试计数:0(从这一行中，我们检查公司名称-CMDTY)

Published 1EO's
Save completed
Trade saving save successful for trade 56945458|220841|b for MCR: CMDTY from source:ICE Tradecapture API retry count: 0 (From this line we check Company Name – CMDTY)

需要匹配的段落是

出版了1EO's
保存完成
节省贸易，为贸易成功保存 用于MCR的56945458 | 220841 | b:来自来源:ICE Tradecapture API的CMDTY 重试计数:0(从这一行中，我们检查公司名称-CMDTY)

Published 1EO's
Save completed
Trade saving save successful for trade 56945458|220841|b for MCR: CMDTY from source:ICE Tradecapture API retry count: 0 (From this line we check Company Name – CMDTY)

将以上段落的内容保存在名为temp的文件中.

saved the content of above paragraph in a file named temp.

我编写了一个简单的脚本来完成此任务，但是似乎无法正常工作.

I wrote a simple script to do this task, But It seems to be not working somehow.

#!/bin/bash
result=$(cat temp | grep -A 2 "Published 1EO's")
echo $result
line="Published 1EO's Save completed Trade saving save successful for trade 56945458|220841|b for MCR: CMDTY from source:ICE Tradecapture API retry count: 0 (From this line we check Company Name – CMDTY)"

echo $line | grep "\b$result\b"
if [ "$line" == "$result" ]; then
 echo "match"
else
 echo "does not match"
fi

任何帮助将不胜感激.

谢谢.

推荐答案

通常，它们并不相同. grep var $ result，其中包含换行(\ n)字符，而$ line包含空格.

Typically , these are not the same. The grep var $result, contains new line (\n) characters inside, while the $line contains spaces.

如果在echo $ result之前设置IFS = $"\ n"，您将能够看到它们之间的区别.

If you set IFS=$"\n" before echo $result, you will be able to see the difference between them.

我不得不在$ line上插入\ n(在正确的位置)，现在工作正常:

I had to insert some \n to $line (in the correct position) and now works fine:

#!/bin/bash
result=$(cat test.log | grep -A 2 "Published 1EO's")
IFS=$"\n"
echo $result
line=$(echo -e "Published 1EO's\nSave completed\nTrade saving save successful for trade 56945458|220841|b for MCR: CMDTY from source:ICE Tradecapture API retry count: 0 (From this line we check Company Name – CMDTY)")
echo "----------------------------------"
#echo $line | grep "\b$result\b"
echo $line

unset IFS

if [[ $line = $result ]]; then
 echo "match"
else
 echo "does not match"
fi

结果:

$./bashtest.sh
Published 1EO's
Save completed
Trade savi g save successful for trade 56945458|220841|b for MCR: CMDTY from source:ICE Tradecapture API retry cou t: 0 (From this li e we check Compa y Name – CMDTY)
----------------------------------
Published 1EO's
Save completed
Trade savi g save successful for trade 56945458|220841|b for MCR: CMDTY from source:ICE Tradecapture API retry cou t: 0 (From this li e we check Compa y Name – CMDTY)
match

这篇关于用于检查文件中是否存在段落/行流的Shell脚本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！