将 \n", 替换为 ", [重复]
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【中文标题】将 \\n", 替换为 ", [重复]【英文标题】：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】：
【参考方案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】：
【参考方案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】：
【参考方案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】：
【参考方案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】：
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