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Scripts Thread, VBS loggof depending on machine name in Coding and Web Development; hi there, is it possible to logoff someone in a VBS startup script depending on the computer name? i ahve ...
  1. #1

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    VBS loggof depending on machine name

    hi there, is it possible to logoff someone in a VBS startup script depending on the computer name?

    i ahve been googling this for hours and canot find anything


    if computer name starts with DT-T then logoff

    Hope you get what i mean.

  2. #2
    ricki's Avatar
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    Hi

    I dont use a vbs script I use abtutor. Its cheap and works like a dream.

    Richard

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    browolf's Avatar
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    shutdown using pure vbs isnt too reliable.

    I use down.exe from lstools instead (although not for start up scripts)
    LoSOFT

    in dos you can do

    if %computername:~0,4% == DT-T (
    down %computername% /P /Q
    )

    in wsh you can access the computer name with

    Set WshNetwork = WScript.CreateObject("WScript.Network")
    WScript.Echo "Computer Name = " & WshNetwork.ComputerName
    do a comparison and then exec the dos command for down.
    Last edited by browolf; 9th March 2010 at 02:23 PM.

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    You can use PsShutdown and call it from a .bat file.

    PsShutdown


    C:\psshutdown.exe -o @C:\PCNameList.txt (o - Logoff the console user. )
    Last edited by cookie_monster; 9th March 2010 at 02:26 PM.

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    you could just create a group for users then on the ou (or group of pcs in ad) deny their user group interactive logon privileges then they cant even log on to them

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    You can't do it with a startup script (because the user can't log on until that's finished) but you could do it with a logon script.

    Googling for a complete idea like this can be tricky - split it up into the bits you want "find computer name in vbscript" "log off user vbscript" and you'll probably find the stuff you need.

    In the code below, I get the username and computername - they're converted to upper case because it then makes checking easier.

    all this will do is stop user "STEVE" from logging on to computer "COMPUTER02" - you probably want something more sophisticated. For example, @browolf has posted a batch file to deal with computers where the first 4 letters are "DT-T" - you can do something like:

    if left(sComputer,4)="DT-T" then

    or you might have:

    if left(sComputer,5)="MA215" or left(sComputer,2)="IT" then

    to pick particular groups of users.

    Hint - while you're debugging, don't log the user off - it will drive you mad :-) Instead, comment out the "logoff" line and put msgbox "logging off" You'll then just get a message if you would be logged off.

    Code:
    set oNet=createobject("wscript.network")
    sComputer=ucase(oNet.computername)
    sUser=ucase(oNet.username)
    
    if sUser="STEVE" then
      if sComputer="COMPUTER02" then
        logoff
      end if
    end if
    
    
    
    sub Logoff
      Set oWMI = GetObject("winmgmts:{impersonationLevel=impersonate,(Shutdown)}!\\.\root\cimv2")
      For Each obj in oWMI.ExecQuery("Select * from Win32_OperatingSystem")
        Set oOS = obj
        Exit For
      Next
      Const EWX_FORCE = 4
      Const EWX_LOGOFF = 0
      oOS.Win32shutdown EWX_FORCE +EWX_LOGOFF
    end sub

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    shutdown using pure vbs isnt too reliable.
    Mmm.. I do JS scripts (ultimately no difference), tried this with essentially the same WMI above and reached the same conclusion for a restart i.e. using an identical reverted to snapshot test VM sometimes it just didn't happen for no obvious reason.

    Psshutdown annoyed me for 10 minutes coz once again again I forgot the accepteula switch, so I stroppily ended up making a very little unmanaged C++ app to make the system call (same parameters, so must be the one WMI hits) - and it has worked every time.

    It's a mystery, best I could think of is that maybe WMI hadn't quite got going when I called it in the script which was firing during startup. It wasn't a factor in my tests, but WMI is also one of those areas that can get trashed in a large variety of interesting ways.

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    round2it's Avatar
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    are you wanting the script to deny access to a machine for certain users?


    if so then the gpo way mentioned above is the way i would go.

    2pence worth
    Last edited by round2it; 9th March 2010 at 09:31 PM.

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