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Using the powershell module, I know how to create a scheduled task, and also how to bind to a scheduled task that is already known. I also have used code to try creating a scheduled task which will re-name it if one already exists by the same name. However, all of these depend on using a try-catch function to pull an error based on a known full name of the task.

I have a use case where I want to get a list of all scheduled tasks that have a name that begins with specific text, but the ending may be different. For example, all tasks where the name is like "My Task ID" (using as wildcard).

Once I get the list of those tasks, I need to loop through them and check the start times. All of this is done so that I can create a task that does not run at the same time as another. These are all one-time tasks and will be removed once executed.

by (40 points)

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by (12.5k points)

Hello,

The below script can be used to find scheduled tasks whose names start with a certain string and output the task names. In the script, the $searchString variable specifies the string for search. The script can be executed in Windows PowerShell on the computer where the Adaxes service runs.

[Reflection.Assembly]::LoadWithPartialName("Softerra.Adaxes.Adsi")

$searchString = "My Task ID" # TODO: modify me

# Get the scheduled task container parh
$ns = New-Object "Softerra.Adaxes.Adsi.AdmNamespace"
$service = $ns.GetServiceDirectly("localhost")

# Build criteria
$criteria = New-AdmCriteria -Type "adm-ScheduledTask" -Expression {name -startswith $searchString}

# Search options
$scheduledTasksContainerPath = $service.Backend.GetConfigurationContainerPath("ScheduledTasks")
$searcher = $service.OpenObject($scheduledTasksContainerPath, $NULL, $NULL, 0)
$searcher.SearchScope = "ADS_SCOPE_SUBTREE"
$searcher.Criteria = $criteria

try
{
    # Execute search
    $searchResultIterator = $searcher.ExecuteSearch()
    $searchResults = $searchResultIterator.FetchAll()
}
finally
{
    # Release resources
    if ($searchResultIterator) { $searchResultIterator.Dispose() }
}

if ($searchResults.Length -eq 0)
{
    # No tasks found
    Write-Host "No tasks were found"
    return
}

foreach ($searchResult in $searchResults)
{
    # Bind to the task
    $task = $service.OpenObject($searchResult.AdsPath, $NULL, $NULL, 0)

    # Get task name
    $taskName = $task.Get("name")

    # Output task name
    Write-Host $taskName
}

To get a schedule of a task, the GetRecurrencePattern method of the IAdmScheduledTask interface can be used. For more details on how to manage scheduled tasks, have a look at the following SDK article: https://www.adaxes.com/sdk/ManagingScheduledTasks.

How to search based on Activity Scope

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