PowerShell/Scripts/remind-me.ps1

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<#
.SYNOPSIS
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Creates a scheduled task that will display a popup message
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.DESCRIPTION
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This PowerShell script creates a scheduled task that will display a popup message.
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.EXAMPLE
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PS> ./remind-me "Dentist" "4/10/2021 12:00 PM"
TaskPath TaskName State
-------- -------- -----
\ Reminder_451733811 Ready
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.LINK
https://github.com/fleschutz/PowerShell
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.NOTES
Author: Markus Fleschutz / License: CC0
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#>
#requires -version 4
param([string]$Message = "", [datetime]$Time)
try {
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if ($Message -eq "") { $Message = read-host "Enter reminder message" }
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$Task = New-ScheduledTaskAction -Execute msg -Argument "* $Message"
$Trigger = New-ScheduledTaskTrigger -Once -At $Time
$Random = (Get-Random)
Register-ScheduledTask -Action $Task -Trigger $Trigger -TaskName "Reminder_$Random" -Description "Reminder"
exit 0
} catch {
write-error "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
exit 1
}