Keith Greer How to update your hosts file.

Every computer has a file on it which allows the owner to specify where a website is loaded from. A hosts file is a simple combination of domain names and IP addresses.

Adding a record to your hosts file means your computer will load the domain using the IP address specified, rather than the one provided by DNS.

  1. Press the Windows key.
  2. Type Notepad in the search field.
  3. Right-click on the Notepad result
  4. Select Run as administrator.
  5. From Notepad, open: C:\Windows\System32\Drivers\etc\hosts
  6. Add the new lines to the file.
  7. Click File > Save to save your changes.
  8. Exit Notepad
  1. Open a terminal window.
  2. Open the hosts file in a text editor (you can use any text editor) by typing the following line:
    sudo nano /etc/hosts
  3. Enter your domain user password.
  4. Make the necessary changes to the file.
  5. Save the file
Good luck. </p>

Mac OS X 10.0 through 10.1.5

  1. Open /Applications/Utilities/NetInfo Manager.
  2. To allow editing of the NetInfo database, click the padlock in the lower-left corner of the window.
  3. Enter your domain user password and click OK.
  4. In the second column of the browser view, select the node named machines.

    The third column contains entries for -DHCP-broadcasthost, and localhost.</li>

  5. In the third column, select localhost.
  6. From the Edit menu, select Duplicate. (The quickest way to create a new entry is to duplicate an existing one.)

    A confirmation alert appears.</li>

  7. Click Duplicate.

    A new entry called localhost copy appears, and its properties are shown below the browser view.</li>

  8. Double-click the value of the ip_address property and enter the IP address of the other computer.
  9. Double-click the value of the name property and enter the hostname you want for the other computer.
  10. Click the serves property and select Delete from the Edit menu.
  11. From the File menu, select Save.

    A confirmation alert appears.</li>

  12. Click Update this copy.
  13. Repeat steps 6 through 12 for each additional host entry that you want to add.
  14. From the NetInfo Manager menu, select Quit.

    You do not need to restart the computer.</li> </ol>

    Mac OS X 10.6 through 10.12

    1. Open Applications > Utilities > Terminal.
    2. Open the hosts file by typing the following line in the terminal window:
      sudo nano /private/etc/hosts
    3. Type your domain user password when prompted.
    4. Edit the hosts file.

      The file contains some comments (lines starting with the # symbol), and some default hostname mappings (for example, – local host). Add your new mappings after the default mappings.</li>

    5. Save the hosts file by pressing Control+x and answering y.
    6. Make your changes take effect by flushing the DNS cache with the following command:
      dscacheutil -flushcache<br />
    7. </ol>

      The new mappings should now take effect.

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