77七

@echo off
chcp 65001 >nul
rem 假设总行数不超过 2000000
%1 (for /l %%l in (0,50000,2000000) do (start /min "" "%~f0" rem %%l))&exit

if %~2 equ 0 (
	set str=
) else (
	set str=skip=%~2
)
for /f "%str% useback tokens=1* delims==" %%a in ("D:\DATA\data.txt") do (
	if exist "D:\DATA\%%a.txt" (
		exit
	)
	(for %%c in (%%b) do (
		echo %%c
	))>"D:\DATA\%%a.txt"
)
exit
复制代码

5万行打开一个窗口，并行处理