Since you've been given tutorials, code samples, and detailed explanations, why don't YOU post what you have written yourself??? We will always be happy to help, but you have to show some effort on your own, too.

Also, this is not useful at all.

How did it not work? What exactly did you do, and what output did you get when you did it? Did you get any error messages? Did you try anything to fix it on your own? Is there anything about your version of awk, shell, or OS that we need to know about?

Remember, we cannot see your screen and we know nothing about your particular circumstances, other than what you tell us. You have to give us more details if you want practical advice.

I posted the command I did because I figured it was probably something that was beyond your current level of ability (and because I found it an interesting challenge to work out for myself), but in the end it's only a general how-to demonstration. It's now up to you to take what I've given you, study and learn from it, and apply it to your own particular situation. Again, we'll help you, but it's not our job to to it all for you.

1 members found this post helpful.

hiz my friend finally i do it !!
i'm so happy

So why don't you post the solution, so others who need help can find it?