How can I add 127.0.0.1 localhost to my etc/hosts file/

So, for months and months, my computer, every 12 seconds or so in the console, shows this: rpc.lockd: can't contact statd, 100024 RPC: Unknown host

I want to resolve this. It cant be good.

Someone on the Apple Disccussion proposed this as a solution: "sounds kinda like loop back is missing from your etc/hosts file? Add 127.0.0.1 localhost if its not at the head of the file and see if it fixes the problem."

I want to try that but I have no idea how to. Can someone explain this to me?

You have to do that in terminal

How to edit the hosts file in Mac OS X 10.8 – Mountain Lion | Grapii

I tried the first part of what he said and i got this message: "-bash: $: command not found"

Do this instead: Copy here what gets shown on the screen. When you're done push q to close less.

I get this: /private/etc/hosts (END)

In that case, it is quite clear that indeed, you don't have the loopback. Do the following:

1. Type the following and press enter: 2. Enter your password (you won't see it but it is indeed being registered).
3. Paste the following: 4. Press Control + O, press enter to save it and then press Control + X to quit