¥Shell requirements
shell 应该理解 -c 开关。如果 shell 是 'cmd.exe'，它应该理解 /d /s /c 开关并且命令行解析应该是兼容的。
-c
'cmd.exe'
/d /s /c
¥The shell should understand the -c switch. If the shell is 'cmd.exe', it should understand the /d /s /c switches and command-line parsing should be compatible.