Commander

@echo off
setlocal enabledelayedexpansion
set "SrcFile=a.txt"
set "DstFile=b.txt"
set "MergeNum=5"
set "Delimiter=;"

type nul>"%DstFile%"
for /f "usebackq tokens=*" %%a in ("%SrcFile%") do (
    set /a RowTotal+=1
    set /a Count+=1
    set "RowMerge=!RowMerge!%Delimiter%%%a"
    if !Count! equ !MergeNum! (
        >>"%DstFile%" echo,!RowMerge:~1!
        set RowMerge=
        set Count=0
    )
)

set /a RowMod=RowTotal%%MergeNum
if !RowMod! equ 0 (
    goto :end
)
>>"%DstFile%" echo,!RowMerge:~1!
:end
复制代码