qixiaobin0715

用批处理试试。
正常代码：

@echo off
setlocal enabledelayedexpansion
for /f "skip=1 tokens=1* delims=," %%a in (b.csv) do set "%%b=true"
(for /f "tokens=1* delims=," %%i in (a.csv) do (
    if defined %%j (
        echo,%%i,%%j,已完成
    ) else (
        echo,%%i,%%j
    )
))>c.csv
move c.csv a.csv
pause
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合并成一行：

@setlocal enabledelayedexpansion&(for /f "skip=1 tokens=1* delims=," %%a in (b.csv) do set "%%b=true")&(for /f "tokens=1* delims=," %%i in (a.csv) do (if defined %%j (echo,%%i,%%j,已完成) else echo,%%i,%%j))>c.csv&move c.csv a.csv
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qixiaobin0715

回复 4# 5i365
忘记关闭回显（代码前加@）了。已修改。

qixiaobin0715

看到前辈们处理UTF8是在前面加chcp 65001>nul。

qixiaobin0715

只是以前看到你想把cmd写成一行，自己也想练练手，瞎写的。

qixiaobin0715

回复 12# 5i365

@echo off &@cls&chcp>nul 65001
@setlocal enabledelayedexpansion&(for /f "skip=1 tokens=1* delims=," %%a in (b.csv) do set "%%b=true")&(for /f "tokens=1* delims=," %%i in (a.csv) do (if defined %%j (echo,%%i,%%j,已完成) else echo,%%i,%%j))>c.csv&move c.csv a.csv
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bat文件编码也要改。