[文本处理] [已解决]批处理怎样在文本每一行开头插入一条语句？

@echo off
>c:\hello.bat more 3+<"%~f0"
exit
helo1>2
ello%n%
echo hello!n!
good
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@echo off&setlocal enableDelayedExpansion
set n=123
(for /f "delims=" %%a in ('more +4^<"%~f0"') do echo;%%a)>c:\hello.bat
exit
helo1^>2
ello%n%
echo hello!n!
good
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@echo off&setlocal enableDelayedExpansion
set n=123
(echo;helo1^>2
echo;ello%n%
echo;echo hello!n!
echo;good)>c:\hello.bat
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@echo off
(for /f "usebackq delims=" %%a in ("1.txt") do (
    set "a=%%a"
    setlocal enableDelayedExpansion
    echo;^>^>c:\hello.bat echo !a!
    endlocal
))>"1_.txt"
复制代码

@echo off
(for /f "usebackq delims=" %%a in ("1.txt") do (
    
    
    echo ^>^>c:\hello.bat echo %%a
    
))>"1_.txt"
复制代码