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2.37. Editing hosts

File hosts used by the operating system to determine the address of certain resources instead of requesting DNS... If the address of a certain resource is specified in the hosts file, the request will not be sent to DNS-server for receiving domain data, when opening a domain - it will open exactly from the address specified in the hosts file. The use of this file is quite convenient for testing the operation of a site from another server without directing the domain directly to this server.

Usually the file is located along the path C:/Windows/System32/Drivers/etc/hosts or %SystemRoot%\system32\drivers\etc\hosts, but it can be changed in the registry.

You can use a registry editor to check the path to the hosts file. To do this, you need to click on Win+R, enter regedit and click "OK". The required parameter can be found along this path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\Parameters\DataBasePath.

To quickly open a file with administrator rights, you need to click Win+R, specify the path to the file C:/Windows/System32/Drivers/etc/hosts and holding the buttons Ctrl+Shift, click on "OK».

Usually the file is located along the path /etc/hosts... On some operating systems, the path may differ.
The path may be different depending on the OS version.

On macOS 9 and earlier, the file is located in the system directory or a subdirectory of it preference... On macOS 10 and later, the file is located in /private/etc/hosts or /etc/hosts1).

In Android, the file is located along the path /system/etc/hosts.
On iOS, the file is located along the path /private/etc/hosts.

The hosts file contains entries in the form IP domainbetween which a tab should be set (to indent, just press Tab), everything after the symbol #is considered a comment:

In this example, there are three entries:

  1. Direction localhost on IPv4 127.0.0.1 (appeal to localhost Is an appeal to oneself).
  2. Direction localhost on IPv6 ::1 (equivalentto 0:0:0:0:0:0:0:1).
  3. Example direction example.com on IPv4 XXX.XXX.XXX.XXX.

1)
/etc on OS X is a symbolic link to /private/etc.