Follow the below instructions to update your hosts file on Mac.
1. Open Terminal
2. Type in the following command to open your host file in Terminal:
sudo nano /etc/hosts
You’ll then be asked for your user password, enter it.
Terminal will open the nano editor and it should look something like this:
3. To add a new entry, add the IP address followed by the domain. Or make other edits to the file as needed.
4. Hit CTRL + X to exit the editor and hit ENTER to save when prompted.