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How to edit the hosts file in Mac OS X
Posted by .CD Support, Last modified by .CD Support on 04 November 2012 09:31
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Introduction The hosts file is a text file that maps hostnames to IP addresses. The hosts file can be edited to block certain hostnames (like ad-serving/malicious hosts), or used for web development purposes, i.e. to redirect domains to local addresses. Editing the hosts file Editing the hosts file in Mac OS X – Leopard, is a pretty easy task, especially if you are familiar with the terminal. Step 1 – Open the Terminal.app Either by start typing Terminal on the Spotlight, or by going into Applications -> Utilities -> Terminal. Step 2 – Open the hosts file Open the hosts by typing on the Terminal that you have just opened:
Type your user password when prompted. Step 3 – Edit the hosts file The hosts file contains some comments (lines starting with the # symbol), as well as some default hostname mappings (e.g. 127.0.0.1 – localhost). Step 4 – Save the hosts file When done editing the hosts file, press control-o to save the file. Step 5 – Flush the DNS cache On Leopard you can issue a simple Terminal command to flush the DNS cache, and have your host file changes to take immediate effect:
You can now test your new mapping on the browser! | |||||
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