The Mac Hosts File: How to Modify /etc/hosts in Mac OS X with TextEdit
The Mac hosts file is a system level file located at /etc/hosts which maps IP addresses to host names for Mac OS X networking. Many users edit and modify the hosts file so that they can point a domain to a different IP address, whether for the purpose of local development, blocking sites, or simply to access alternate servers from various apps and system level functions. Most advanced users will edit the hosts file from the Mac OS X Terminal using nano or vim, but for those who prefer to stay within the Mac OS GUI, you can also modify the Mac’s hosts file through TextEdit, or even a third party app like BBEdit or TextWrangler. This offers a more user friendly option compared to going through the command line.