change wallpaper cmd code example
Example: how to change windows wallpaper from command line
reg add "HKEY_CURRENT_USER\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d wallpaper_path /f
reg add "HKEY_CURRENT_USER\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d wallpaper_path /f