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Unless you know the command to stop shutdown,just open cmd and type shutdown -a
It won'tThe "sendkey" command is litteraly doing what it says.It's just typing."prompt deleting cookies..."or commands like that does not exist.it's just text showing up.it would affect your computer if it would send a REAL delete command,in that case,yes,it could be dangerous
No...VBScript does not exist on MACs.That's why we don't use MAC,you can't program things or do gaming,you can't do a lot of things on them.It won't work because on your mac it will still be a text file and the .vbs will not work and when you will send it your friend will probably receive it as a text file.I never used macs so you can still try but i don't think it will work
Well,you can't delete a file while it's running,it ends automaticly so yes it is gone if you can delete it it's because it is not running