Shutdown.exe switches

C:\WINDOWS\system32>shutdown /?

Usage: shutdown [/i | /l | /s | /r | /a | /p | /h | /e] [/f]
    [/m \\computer][/t xxx][/d [p:]xx:yy [/c "comment"]]

    No args    Display help. This is the same as typing /?
    /?         Display help. This is the same as not typing any options
    /i         Display the graphical user interface (GUI).
               This must be the first option
    /l         Log off. This cannot be used with /m or /d option
    /s         Shutdown the computer
    /r         Shutdown and restart the computer
    /a         Abort a system shutdown.
               This can only be used during the time-out period
    /p         Turn off the local computer with no time-out or warning.
               This can only be used with /d option
    /h         Hibernate the local computer.
               This can only be used with the /f option
    /e         Document the reason for an unexpected shutdown of a computer
    /m \\computer Specify the target computer
    /t xxx     Set time-out period before shutdown to xxx seconds.
               The valid range is 0-600, with a default of 30
    /c "comment" Comment on the reason for the restart or shutdown.
               Maximum of 127 characters allowed
    /f         Force running applications to close without forewarning users
    /d [p:]xx:yy  Provide the reason for the restart or shutdown
               p indicates that the restart or shutdown is planned
               xx is the major reason number (positive integer less than 256)
               yy is the minor reason number (positive integer less than 65536)

How to create an Update System Time Shortcut for Windows 7

1. Create a .bat file containing the following text (the fourth line is optional):

@echo off
net start w32time
w32tm /resync

%windir%\explorer.exe shell:::{E2E7934B-DCE5-43C4-9576-7FE4F75E7480}

2. Create a shortcut to the new bat file.

3. Allow "Run As Administrator" in Advanced Properties section of the Shortcut Properties