From 9779a35c986b787f82cfd5bd7eb1c3ce7c40e482 Mon Sep 17 00:00:00 2001
From: DistractADD <kurt@mortalkombat.com.au>
Date: Fri, 27 Jun 2025 02:29:57 +0000
Subject: [PATCH] Create New File

---
 Powershell/Universal_Task_Script.ps1 | 144 +++++++++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 Powershell/Universal_Task_Script.ps1

diff --git a/Powershell/Universal_Task_Script.ps1 b/Powershell/Universal_Task_Script.ps1
new file mode 100644
index 0000000..8ead5c8
--- /dev/null
+++ b/Powershell/Universal_Task_Script.ps1
@@ -0,0 +1,144 @@
+<#
+.SYNOPSIS
+  Create or list Scheduled Tasks on local or remote servers under SYSTEM account.
+
+.DESCRIPTION
+  Streamlines task creation and management across multiple servers:
+  - Always runs as SYSTEM
+  - Supports Once/Daily/Weekly/Monthly triggers
+  - Custom action command + arguments
+  - Custom settings (start when available, wake to run, restart on failure)
+  - Optionally list existing tasks
+  - Can target a remote server via CIM session
+
+.PARAMETER ServerName
+  (Optional) Remote server to connect to. If omitted, actions run locally.
+
+.PARAMETER ListTasks
+  Switch. If specified, lists current scheduled tasks and exits.
+
+.PARAMETER TaskName
+  Name of the scheduled task (required unless -ListTasks).
+
+.PARAMETER Description
+  Task description (appears in Task Scheduler UI).
+
+.PARAMETER Frequency
+  Trigger frequency: Once, Daily, Weekly, Monthly.
+
+.PARAMETER At
+  DateTime for the trigger (for Once) or time of day (for recurring triggers).
+
+.PARAMETER DaysOfWeek
+  When Frequency = Weekly, specify days (e.g. Monday,Wednesday).
+
+.PARAMETER Months
+  When Frequency = Monthly, specify months (e.g. January,June).
+
+.PARAMETER DaysOfMonth
+  When Frequency = Monthly, specify days of month (e.g. 1,15,28).
+
+.PARAMETER Command
+  Executable to run (default: powershell.exe).
+
+.PARAMETER Arguments
+  Command arguments (e.g. '-File C:\Scripts\MyScript.ps1').
+
+.PARAMETER StartWhenAvailable
+  If set, task will start if missed.
+
+.PARAMETER WakeToRun
+  If set, will wake the machine to run.
+
+.PARAMETER RestartIntervalMinutes
+  On failure, how often (minutes) to retry. Zero = no retry.
+
+.PARAMETER RestartCount
+  How many retry attempts on failure.
+#>
+[CmdletBinding()]
+Param(
+    [string]$ServerName,
+    [switch]$ListTasks,
+    [Parameter(Mandatory = $false, Position = 0)][string]$TaskName,
+    [string]$Description,
+    [ValidateSet('Once','Daily','Weekly','Monthly')][string]$Frequency,
+    [datetime]$At,
+    [string[]]$DaysOfWeek,
+    [string[]]$Months,
+    [int[]]$DaysOfMonth,
+    [string]$Command    = 'powershell.exe',
+    [string]$Arguments  = '',
+    [switch]$StartWhenAvailable,
+    [switch]$WakeToRun,
+    [int]$RestartIntervalMinutes = 0,
+    [int]$RestartCount = 0
+)
+
+# Create CIM session if remote
+if ($ServerName) {
+    Write-Host "Creating CIM session to $ServerName..."
+    $CimSession = New-CimSession -ComputerName $ServerName
+}
+
+# List tasks and exit
+if ($ListTasks) {
+    Write-Host "Listing Scheduled Tasks on" ($ServerName ? $ServerName : 'local')
+    Get-ScheduledTask -CimSession $CimSession |
+      Select-Object TaskName, State, Actions |
+      Format-Table -AutoSize
+    return
+}
+
+# Validate required parameters for task creation
+if (-not $TaskName -or -not $Description -or -not $Frequency -or -not $At) {
+    Throw 'Parameters -TaskName, -Description, -Frequency, and -At are required when creating a task.'
+}
+
+# Build trigger
+switch ($Frequency) {
+    'Once' {
+        $trigger = New-ScheduledTaskTrigger -Once -At $At
+    }
+    'Daily' {
+        $trigger = New-ScheduledTaskTrigger -Daily -At $At.TimeOfDay
+    }
+    'Weekly' {
+        if (-not $DaysOfWeek) { Throw 'Specify -DaysOfWeek for Weekly triggers.' }
+        $trigger = New-ScheduledTaskTrigger -Weekly -DaysOfWeek $DaysOfWeek -At $At.TimeOfDay
+    }
+    'Monthly' {
+        if (-not $Months -or -not $DaysOfMonth) { Throw 'Specify -Months and -DaysOfMonth for Monthly triggers.' }
+        $trigger = New-ScheduledTaskTrigger -Monthly -MonthsOfYear $Months -DaysOfMonth $DaysOfMonth -At $At.TimeOfDay
+    }
+}
+
+# Build action
+$action = New-ScheduledTaskAction -Execute $Command -Argument $Arguments
+
+# Build settings
+$settings = New-ScheduledTaskSettingsSet `
+    -AllowStartIfOnBatteries:$false `
+    -DontStopOnIdleEnd `
+    -StartWhenAvailable:$StartWhenAvailable.IsPresent `
+    -WakeToRun:$WakeToRun.IsPresent
+
+if ($RestartIntervalMinutes -gt 0) {
+    $interval = New-TimeSpan -Minutes $RestartIntervalMinutes
+    $settings = $settings | Set-ScheduledTaskSettings -RestartOnFailureInterval $interval -RestartCount $RestartCount
+}
+
+# Register task as SYSTEM
+Write-Host "Registering task '$TaskName' on" ($ServerName ? $ServerName : 'local')
+Register-ScheduledTask `
+  -TaskName $TaskName `
+  -Action $action `
+  -Trigger $trigger `
+  -Settings $settings `
+  -Description $Description `
+  -User 'NT AUTHORITY\SYSTEM' `
+  -RunLevel Highest `
+  -CimSession $CimSession `
+  -Force
+
+Write-Host "Task '$TaskName' created successfully."