在文本文件的第一行的开头插入单双引号 [英] Insert Single Double Quote Into Start of First Line in Text File

问题描述

我有一个像这样的文件，开始时缺少双引号...

I have a file like with a missing double quote at the start...

1","abc","123"
"2","abcd","456"
"3","abce","789"

我想运行一个命令在第一个位置插入一个双引号，以便文件看起来像...

I want to run a command to insert a single double quote in to the first position so the file looks like...

"1","abc","123"
"2","abcd","456"
"3","abce","789"

推荐答案

不知为何，您为什么需要批处理脚本才能更改单个文件.但是你去了:

Somehow I miss the point, why you need a batch script to change a single file. But here you go:

@echo off
<nul >"new.txt" set /p x="""
>>"new.txt" type "old.txt"
move /y "old.txt" "new.txt"

首先:编写不带换行符的"(使用set /p的(错误))
第二:添加原始文件
第三:将结果重命名为原始文件名

first: write a " without linebreak ((mis)using set /p)
second: add the original file
third: rename the result to the original filename

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