What does following lines of code show? - Web Security

What does following lines of code show?

GET ../../../../etc/shadow HTTP/1.0

- GET is the method that is used to access the files from the server it works the same way like PUT.

- GET method allows the information to be taken from the web server and send it to the user’s browser.

- The directory /etc/ consists of a shadow file that is having the special privileges and only accessible that is having the permissions.

- /etc/shadow consists of all the passwords and usernames that can be accessed and made changes to.

- The file 1.0 of HTTP can be specified by the constructor FileReader and it can attempt to open the file.