> shutdown /?
> Usage: shutdown [/i | /l | /s | /r | /g | /a | /p | /h | /e | /o] [/hybrid] [/f]
The windows cmd.exe command shutdown only documents forward slash / switches, but it accepts dash - switches as well. For instance, both work:
shutdown /s /t 0
shutdown -s -t 0
When was this added and why?
6
I would venture that multiple escape characters are supported for switches so that users that are used to a particular escape character can still use the application from the command-line.
Slashes are Windows’s original option syntax and not all windows commands accept the dash-options.
With Dir /? you the list of the options for dir.
But with
Dir -?
you get a file not found-message (tested with Windows XP) (Same with dir -w…).