DOS命令下的文件复制
cd /d c:\windows\system32
ren kernel32.dll kernel32.dll.old
copy H:\kernel32.dll "C:\Windows\System32\kernel32.dll" /y
cd /d c:\windows\system32
ren kernel32.dll kernel32.dll.old
copy H:\kernel32.dll "C:\Windows\System32\kernel32.dll" /y