# Learn Powershell Automation in Less than 1 Hour

## Schedule-Task

### Example

Do a task at a precise time

```powershell
$trigger  = New-ScheduledTaskTrigger -At 3pm -Daily
$action   = New-ScheduledTaskAction -Execute "powershell.exe" -Argument '-File "C:\Scripts\TestSpace.ps1"'
$settings = New-ScheduledTaskSettingSet

Register-ScheduledTask `
  -Action $action `
  -Trigger $trigger `
  -TaskName "Test SpaceX" `
  -Description "Tests connection with SpaceX.com" `
  -Settings $settings
```

### New-ScheduledTaskTrigger

Creates a trigger object that defines when the scheduled task will run.

Breakdown of components

### New-ScheduledTaskAction

Defines what program or command the scheduled task will execute.

### New-ScheduledTaskSettingSet

Creates a settings object that controls how the task behaves.

### Register-ScheduleTask

Registers the task with Windows Task Scheduler, making it active.


## Get-ScheduledTask

Return every Scheduled task 

```powershell
Get-ScheduledTask -TaskName "Test SpaceX" | Get-ScheduledTaskInfo
```

## Unregister-ScheduledTask

Remove a ScheduledTask

```powershell
Unregister-ScheduledTask -TaskName "Test SpaceX" -Confirm:$false
```

## Difference between Scheduled task and schedueld job

A **scheduled task** is a generic scheduled unit of work, 
while a **scheduled job** is a defined, 
often reusable execution of that work within a scheduling system.


## ScheduledJob

More advance can run when the computer is in different state (sleep or hibernate)
More straightforward

### Example

```powershell
$Trigger = New-JobTrigger -Daily -at 3pm
$Scriptblck = { C:\Scripts\TestSpaceX.ps1 }
Register-ScheduledJob -Name "TestSpaceX Job" -ScriptBlock $scriptblock -Trigger $Trigger
```

### Get-ScheduledJob

List all the ScheduledJob

```powershell
Get-ScheduledJob -Name "TestSpaceX" | select Name, State
```

###  Unregister-ScheduledJob

Remove a ScheduledJob

```powershell
Unregister-ScheduledJob -Name "TestSpaceX Job"
```

## GUI with Powershel

A graphical user interface application developed using PowerShell to automate tasks, manage systems, and provide user-friendly access to scripts and tools.

[Disk cleaner example](https://github.com/jimrtyler/diskcleaner/blob/main/DiskCleaner.ps1)