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Scheduling a Task to Run Once every 6months using AT Command and VBScript

Posted on 2008-10-08
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Last Modified: 2012-05-05
I currently have the code below that removes and old task on my XP machines and adds a new and if Vista is the OS detected it skips the removal portion and simply adds a task. This works well and dandy my only issue is the scheduling portion.

I currently have it set in the code so it scans on the 28th of each month. However I'd only like it to scan once every 6 months so If I could select only January and June I'd be happy, however I cannot seem to find how to schedule a task like this to only run on the 28th of the two months I want.

Can anyone offer me some advise on how to do this or if it's possible?


Set objWMIService = GetObject("winmgmts:{impersonationLevel=impersonate}!\\.\root\cimv2")
Set colOperatingSystems = objWMIService.ExecQuery ("SELECT * FROM Win32_OperatingSystem")
For each objOperatingSystem in colOperatingSystems 
 
If left(ObjOperatingSystem.version,1) >=6 Then 
Call Add_Job
Else
    strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
 
Set objInstance = objWMIService.Get("Win32_ScheduledJob.JobID=1")
 
err = objInstance.Delete
 
strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set objNewJob = objWMIService.Get("Win32_ScheduledJob")
errJobCreated = objNewJob.Create _
     ("c:\Progra~1\Identi~1\IdentityFinder.exe /jobmode /inifile=\\SERVERADDRESS\idf$\ini\cph.ini"  , "********000000.000000-420", _
        True ,  , 134217728 , , JobID=1)
 
 
End If
Next
 
 
Sub Add_Job()
strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
Set objNewJob = objWMIService.Get("Win32_ScheduledJob")
errJobCreated = objNewJob.Create _
    ("c:\Progra~1\Identi~1\IdentityFinder.exe /jobmode /inifile=\\SERVERADDRESS\idf$\ini\cph.ini"  , "****06**000000.000000-420", _
        True ,  ,134217728 , , JobID=1)
End Sub

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Question by:lotharpenguin
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9 Comments
 
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Expert Comment

by:MikeKane
ID: 22668798
Good question.   I went searching for this one, I looked at both the AT command as you requested and also at the Win32_scheduledJob Class.    

In each case you can not specify a date for the scheduled item.  Each will only accept a weekday, or day of the month.  

Looking at the msdn:
http://msdn.microsoft.com/en-us/library/aa394399(VS.85).aspx

Quote on the STARTTIME:
UTC time to run the job, in the form of "YYYYMMDDHHMMSS.MMMMMM(+-)OOO", where "YYYYMMDD" must be replaced by "********". The replacement is necessary because the scheduling service only allows jobs to be configured to run one time, or run on a day of the month or week. A job cannot be run on a specific date.

Basically, doesn't look like you can do this via script.
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Author Comment

by:lotharpenguin
ID: 22668883
^^ That's what I had found also. But it makes no sense since you can choose a month in the task scheduler itself.
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LVL 33

Accepted Solution

by:
MikeKane earned 1000 total points
ID: 22668983
It must be early or I would have thought of this before....  

Try using the shell command schtasks  instead of AT or the Win32_scheduledJob Class.

the schtasks /create has a /MO option to specify weeks of the year numbered 1-52.   That should take care of your issue.  

Sample:
Set objShell = Wscript.CreateObject("Wscript.Shell")
objShell.run("cmd /c schtasks.exe /create /SC DAILY /ST 15:00:00 /TN Backup /RU domain_name\user ID /RP password /TR c:\backup.vbs")

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Author Comment

by:lotharpenguin
ID: 22669131
For some reason I think I had tried that in the past and there was an issue with the UNC path or something I shall try it again and see what happens.
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Author Comment

by:lotharpenguin
ID: 22669208
Yep with the list of switches I have to use with the app to get it to do what I need it to do schtask bawks at me and fails to add the job in the script. Outside of the script it functions but written as such.

It assumes /jobmode is a switch on schtasks not the IDF application.

Set objShell = Wscript.CreateObject("Wscript.Shell")
objShell.run("cmd /c schtasks.exe /create /SC MONTHLY /ST 15:00:00 /TN IDF /TR c:\Progra~1\Identi~1\IdentityFinder.exe /jobmode /inifile=\\ph-home.public-health.uiowa.edu\idf$\ini\cph.ini ")

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Expert Comment

by:MikeKane
ID: 22669423
Here's a workaround:

Create 1 batch file with the line,
c:\Progra~1\Identi~1\IdentityFinder.exe /jobmode /inifile=\\ph-home.public-health.uiowa.edu\idf$\ini\cph.ini

Then use the schtask to call the batch file.....  

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Author Comment

by:lotharpenguin
ID: 22669506
^^ Yep decided to just use a vbscript to call my scheduled command in a .bat file. Seems to work ok and is now scheduled for JUN and JAN 1st. Thanks Mike!
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Author Closing Comment

by:lotharpenguin
ID: 31504207
Great help on this subject.
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Author Comment

by:lotharpenguin
ID: 22669561
In case anyone needs to do something like this in the future:


#VBS FILE TO CALL BAT FILE AND ELIMINATE VISTA BOXES FOR ERROR ISSUES:
 
On Error Resume Next
Set objWMIService = GetObject("winmgmts:{impersonationLevel=impersonate}!\\.\root\cimv2")
Set colOperatingSystems = objWMIService.ExecQuery ("SELECT * FROM Win32_OperatingSystem")
For each objOperatingSystem in colOperatingSystems 
 
If left(ObjOperatingSystem.version,1) >=6 Then 
Call Add_Job
Else
    strComputer = "."
Set objWMIService = GetObject("winmgmts:" _
    & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
 
Set objInstance = objWMIService.Get("Win32_ScheduledJob.JobID=1")
 
err = objInstance.Delete
 
Set oShell = CreateObject("WSCript.shell") 
 
sCmd = "\\BATFILELOCATION\schtask.bat"
oShell.Run sCmd, 0, False
 
End If
Next
 
Sub Add_Job()
Set oShell = CreateObject("WSCript.shell") 
 
sCmd = "BATFILELOCATION\schtask.bat"
oShell.Run sCmd, 0, False
End Sub
 
 
#BAT FILE CONTENTS:
 
cmd /c schtasks.exe /create /SC MONTHLY /m JUN,JAN /ST 15:00:00 /TN IDF /TR "c:\Progra~1\Identi~1\IdentityFinder.exe /jobmode"

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