# System Events

![System Events in the Admin Console](/files/ByU2xzYz3jvdnOWtqmet)

System events subscribe to WMI events within Windows and run scripts. You can then take action by running scripts. 

## Defining a System Event

To define a system event, you can use the `New-PSUSystemEvent` cmdlet within the `systemEvents.ps1` file. The following example triggers the `systemEvent.ps1` script when a `pwsh.exe` process is started.

```powershell
New-PSUSystemEvent -Script "systemEvent.ps1" -Environment "Default" -Credential "Default" -Type "Create" -Condition "TargetInstance isa `"Win32_Process`" and TargetInstance.Name = `"pwsh.exe`"" -Name "PowerShell Started"
```

## Accessing Event Data

When a script is executed, you will receive a `$TargetInstance` parameter. This contains the WMI object that caused the event to trigger. 

```powershell
param($TargetInstance)

New-BurntToastNotification -Text "PowerShell Started! $TargetInstance"
```


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