sudo apt update
sudo apt install openssh-client
sudo apt install openssh-server

sudo apt-get install openssh-server <===> SSH server pro vzdálenou správu // install a SSH server in UNIX

sudo service ssh status <===> ověří zda běží SSH server (InitV)
sudo service ssh start <===> spusti OpenSSH server (InitV)
sudo service ssh stop <===> zastavi OpenSSH server (InitV)

sudo systemctl status ssh <===> overi OpenSSH server (SystemD)
sudo systemctl start ssh <===> spusti OpenSSH server (SystemD)
sudo systemctl stop ssh <===> zastavi OpenSSH server (SystemD)

/etc/init.d/ssh status
/etc/init.d/ssh start
/etc/init.d/ssh stop
/etc/init.d/ssh restart