ssvr.ps1

#!/bin/bash
# From: https://gist.github.com/RichardBronosky/c61465ed897c2f10e9bf16704d1d9af9
# This works from both WSL/bash and powershell!

powershell.exe -command "& (Get-ItemProperty 'HKCU:Control Panel\Desktop').{SCRNSAVE.EXE}"

Start-ScreenSaver.ps1

# Start-ScreenSaver
# Version: 1.1
# From: https://lunaticexperiments.wordpress.com/2006/12/07/powershell-script-to-start-a-random-screen-saver/

param ([String]$Include, [String]$Exclude)

#Avoid execution if a screen saver is already running
if (get-Process *.scr) {
 return
}

#If filters are not provided default to user preference.
if ( -not $Include -and -not $Exclude) {
 [String]$DefaultScreenSaver = (Get-ItemProperty 'HKCU:Control Panel\\Desktop').{SCRNSAVE.EXE}
 if ($DefaultScreenSaver) {
  & $DefaultScreenSaver
  return
 }
}

#Get a list of available screen savers and filter them.
[System.Management.Automation.ApplicationInfo[]]$ScreenSaverCommands = Get-Command *.scr -CommandType Application |
 Where-Object {
  $(
   if ($Include) { $_.Name -like $Include -or $_.Name -eq $Include + '.scr' }
   else {$true}
  ) -and
  $(
   if ($Exclude) { -not ( $_.Name -like $Exclude ) }
   else {$true}
  )
 }

#Randomly choose a screen saver and execute it.
if ($ScreenSaverCommands) {
 & $(($ScreenSaverCommands[$(New-Object System.Random).Next($ScreenSaverCommands.Length)]).Definition)
}