This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
I tried like you said but it is not working
I know I have made mistake but can't figure out where
and I could not find any satisfactory answer in the link you provided
I tried following commands now
but not working