sudo systemctl reload ssh.service
sudo systemctl status ssh.service
фев 22 22:43:11 srv16 systemd[1]: Reloading OpenBSD Secure Shell server...
фев 22 22:43:11 srv16 systemd[1]: Reloaded OpenBSD Secure Shell server.
фев 22 22:43:11 srv16 sshd[462]: Server listening on 0.0.0.0 port 4453.
фев 22 22:43:11 srv16 sshd[462]: Server listening on :: port 4453.
sudo /usr/sbin/nginx
и sudo запустит /usr/sbin/nginx от имени root без пароля для любого пользователя входящего в группу nginx-agentAfter= ... that the listed unit is fully started up before the configured unit is started.