content: #!/usr/bin/osascript
  
  on run argv
      if count of argv is 1 then -- set
          tell application "System Events"
              tell every desktop
                  set picture to (item 1 of argv as POSIX FILE)
              end tell
          end tell
      else -- get
          tell application "System Events" to tell every desktop to picture
      end if
  end run
  