pi@raspberrypi:~ $ sudo rm /etc/nginx/sites-enabled/default.save
pi@raspberrypi:~ $ service nginx start
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to start 'nginx.service'.
Multiple identities can be used for authentication:
1. ,,, (pi)
2. root
Choose identity to authenticate as (1-2): 1
Password:
==== AUTHENTICATION COMPLETE ===
Скажите, а что это за аутентификация какая-то?