dos for循环

for %1 in (%windir%\system32\*.dll) do regsvr32.exe /s %1

for /f % in (phone.txt) do (
    echo %
    ping -n  127.0.0.1 > tmp_file
)

for % in (    ) do (
    echo %
    ping -n  127.0.0.1 > tmp_file
)