[文本处理] [分享]批处理给txt文件指定行的行首添加字符串

@echo off
cd /d "%~dp0"
setlocal enabledelayedexpansion
set "n=0"
(for /f "delims=" %%i in ('type "1.txt"') do (
    set /a "n+=1"
    if !n! equ 1 (
        echo,%%i
    ) else (
        echo 2 %%i
    )
))>"1_New.txt"
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@echo off
cd /d "%~dp0"
set /p str=<"1.txt"
>"1_New.txt" echo,%str%
(for /f "skip=1 delims=" %%i in ('type "1.txt"') do (
    echo 2 %%i
))>>"1_New.txt"
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