a6c123

@echo off
if not exist newtxt md newtxt
for /f "delims=" %%a in ('dir /a:-d /b *.txt') do (
    set file=%%a
    SetLocal EnableDelayedExpansion
    set /a RanNum = !random! %% 10 + 1
    >"newtxt\!file!" sort /+!RanNum! "!file!"
    EndLocal
)
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