на языке SHELL Ввести последовательность строк. Подсчитать количество совпадающих строк.

update and upgrade version SSH on a non-standard port Fail2Ban - configure automatic logging and banning of IP addresses that exceed limits and/or generate 404 and 403 errors Nginx - configure blocking of empty UAs and known scanners, close scanning from IN, PK, SG, CN, limit the maximum number of requests per second, configure proxying to an external IP address phpMyAdmin - install and configure on a non-standard port ISPmanager - install and configure on a non-standard port close unused ports to prevent connection drops