Add files via upload

desktop.ps1

@@ -0,0 +1,45 @@
+<#
+	(new-object System.Net.WebClient).DownloadFile('https://raw.githubusercontent.com/judge2020/judge2020-ws/master/b.jpg',"c:\temp\b.jpg");
+#>
+(new-object System.Net.WebClient).DownloadFile('https://wallimpex.com/data/out/773/nvidia-triple-monitor-wallpaper-11208855.jpg',"c:\temp\b.jpg");
+
+
+
+Function Set-WallPaper($Image) {
+<#
+.SYNOPSIS
+Applies a specified wallpaper to the current user's desktop
+   
+.PARAMETER Image
+Provide the exact path to the image
+ 
+.EXAMPLE
+Set-WallPaper -Image "C:\Wallpaper\Default.jpg"
+ 
+#>
+
+Add-Type -TypeDefinition @" 
+using System; 
+using System.Runtime.InteropServices;
+ 
+public class Params
+{ 
+    [DllImport("User32.dll",CharSet=CharSet.Unicode)] 
+    public static extern int SystemParametersInfo (Int32 uAction, 
+                                                   Int32 uParam, 
+                                                   String lpvParam, 
+                                                   Int32 fuWinIni);
+}
+"@ 
+
+$SPI_SETDESKWALLPAPER = 0x0014
+$UpdateIniFile = 0x01
+$SendChangeEvent = 0x02
+
+$fWinIni = $UpdateIniFile -bor $SendChangeEvent
+
+$ret = [Params]::SystemParametersInfo($SPI_SETDESKWALLPAPER, 0, $Image, $fWinIni)
+}
+
+
+Set-WallPaper -Image  "c:\temp\b.jpg"