@echo off
echo %time%
for /l %%i in (1,1,1000) do (
    echo a>>t
    echo b>>t
    echo c>>t
)
echo %time%
for /l %%i in (1,1,1000) do (
    echo a>>t.txt
    echo b>>t.txt
    echo c>>t.txt
)
echo %time%
for /l %%i in (1,1,1000) do (
    echo a>>t.dll
    echo b>>t.dll
    echo c>>t.dll
)
echo %time%
pause
复制代码