CMD添加新的文本行

Question

好了，所以基本上，我需要一個代碼，會做這樣的事情：

@echo off 
start: 
echo Type what you want me to remember! 
set /p newline= 
<add %newline% to Line 4 in safe.txt> 
goto start 

我不想取代現有的4號線在safe.txt。

Answer 1

如果你想輸入附加到文件的末尾：

@echo off 
start: 
echo Type what you want me to remember! 
set /p newline= 
Echo %newline% >> safe.txt 
goto start 

如果你想在4號線後添加行：

@echo off 
start: 
echo Type what you want me to remember! 
set /p newline= 

setlocal enabledelayedexpansion 
set count=0 
ren safe.txt safe.tmp 
for /f "delims=" %%a in (safe.tmp) do (
set /a count+=1 
Echo %%a >> safe.txt 
if !count!==4 Echo !newline! >> safe.txt 
) 
del safe.tmp 
goto start 

，其中之一代碼應該可以幫助你解決你的問題。

蒙娜麗莎