Question

怎样用批处理从文本中提取固定的字符作为一行

RT ： 我想将一段十六进制的字符编译成 47个字符一行满48字符后自动换行 然后在每行前面和后面加上一段固定的代码T

Answer 1

楼主是不是这样啊？
@echo off
if exist "ok.txt" del /q /f /a "ok.txt"
for /f "delims=" %%a in ('type "123.txt"') do set V=%%a&goto :P
:P
if "%V%"=="" start "" "ok.txt"&exit
set T=%V:~0,47%&set V=%V:~47%
echo T%T%T>>ok.txt
goto :P

测试文本 123.txt 内容：

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

Answer 2

楼主能否给出一些数据以方便测试之用。