MacOS – How to change the font smoothing setting from the command line

I have found this MacWorld post showing an AppleScript that you can execute to force that.

I have my desktop images set to change every 30 minutes in random order. Sometimes the desktop will display an image that displayed earlier in the day, and I wanted a way to 'advance' the image easily. The following AppleScript will cause the desktop image to change, in whatever order you have set, each time it is run:

And this is the script:

property theSwitch : 0
if theSwitch = 0 then
  tell application "System Events"
    tell current desktop
      set change interval to 1801.0
    end tell
  end tell
  set theSwitch to 1
else
  tell application "System Events"
    tell current desktop
      set change interval to 1800.0
    end tell
  end tell
  set theSwitch to 0
end if

Please check the link and the comments for more similar or complete alternatives.

Note: I have not tested this.

UPDATE I'm sorry to hear that it didn't work for you, yet it does for me on Snow Leopard with the following script:

tell application "System Events"
    tell current desktop
        set initInterval to get change interval -- get the currrent display interval
        set change interval to -1 -- force a change to happen right now
        set change interval to initInterval -- change it back to the original display interval
    end tell
end tell

WARNING

This assumes that you have

[X] "change picture ever x timesteps"

[X] Random Order

The above works for me. I ran it from the AppleScript Editor several times to make sure it was working and it indeed does change the Wallpaper.

Well, to answer my own question: the problem was that my GPU was overheating.

I forgot to mention that this specific machine is a hackintosh. I don't know if such thing can happen to a real Mac, but anyway: here where I live it's pretty hot and dry, so there's a lot of dust accumulation inside and around my computer. The GPU cooler stopped because of this (last time I cleaned it was back in March), so I just opened up the computer case, cleaned it and now everything seems to be back to normal.