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.

111.222.333.444 www.domain.com
111.222.333.444 domain.com
111.222.333.555 subdomain.domain.com

Windows

Press the Windows key
Type Notepad
From the results, right click on “Notepad” and choose “Run as administrator”
From Notepad load the file C:\Windows\System32\Drivers\etc\hosts
Enter the IP address, followed by a space or tab, and the domain
Save the changes
Exit Notepad

Linux

Open a terminal window and enter sudo nano /etc/hosts.
Enter your password if prompted
Enter the IP address, followed by a space or tab, and the domain
Ctrl+O to save
Ctrl+X to close

MacOS X

Open a terminal window and enter sudo nano /etc/hosts.
Enter your password if prompted
Enter the IP address, followed by a space or tab, and the domain
Ctrl+O to save
Ctrl+X to close

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