The following is a mock-up of a Nginx web server access log. There are a few entries that might indicate someone is searching for an attack vector. Write a command that will do all of the wollowing; Read the lines from a file Use a single regular expression to find all lines where; Someone tried to access a file starting with a period (example ".htaccess") OR Someone attempted to open one of; "php. ini" or "wp. conf" OR Someone tried to retrieve a parent directory (example ".." somewhere in the URL) Output a list of IP addresses without duplicates