将 \n", 替换为 ", [重复]答案

【问题标题】：Replace \n", with ", [duplicate]将 \n", 替换为 ", [重复]
【发布时间】：2014-02-20 13:03:20
【问题描述】：

我的文件中有如下格式的数据

"253539","","Company1 Name  
","0","1"
"255229","","Ramu ","0","1"
"253548","","Mater Name/Id 
","0","1"
"255229","","Ram Lakh","0","1"
"253619","","CHild Name/Ids 
","0","1"

每一行都附加了\n。

如何在 shell 脚本中将 \n", 替换为 ", 以获取输出为

"253539","","Company1 Name/Id  ","0","1"
"255229","","Ramu ","0","1"
"253548","","Mater Name/Id ","0","1"
"255229","","Ram Lakh","0","1"
"253619","","CHild Name/Id ","0","1"

需要自动化一个过程，所以必须写在 shell 脚本中。

请帮忙。

【问题讨论】：

标签： bash shell sh

【解决方案1】：

不确定是否可以在 shell 中轻松完成此操作，但我制作了一个一次性的 Perl 脚本来执行此操作：

perl -e 'foreach (<>) { chop; print; print "\n" if /"$/ }' < mydata.csv

仅当行以" 结尾时才输出换行符。

【讨论】：

【解决方案2】：

可以做类似的事情

#!/bin/bash

while read -r line; do
 [[ $line =~ '"'$ ]] && echo "$line" || echo -n "$line"
done < file

例如在您的输入文件上

> ./abovescript
"253539","","Company1 Name","0","1"
"255229","","Ramu ","0","1"
"253548","","Mater Name/Id","0","1"
"255229","","Ram Lakh","0","1"
"253619","","CHild Name/Ids","0","1"

【讨论】：

【解决方案3】：

使用awk，您可以：

$ awk '/"$/ {print a$0; a=""; next} {a=$0}' file
"253539","","Company1 Name  ","0","1"
"255229","","Ramu ","0","1"
"253548","","Mater Name/Id ","0","1"
"255229","","Ram Lakh","0","1"
"253619","","CHild Name/Ids ","0","1"

它的作用是将行存储在a 中，以防它不以" 结尾。如果是，则打印存储的行加上当前行。

【讨论】：

【解决方案4】：

如果@fedorqui 的回答可以被接受，那么这里是较短的代码。

awk '{printf $0 (/"$/?RS:X)}' file

【讨论】：