To restart the SSH (Secure Shell) service on a Linux/Unix system, you can use the following command:
sudo systemctl restart sshd
This command will restart the SSH daemon, which is the service responsible for handling incoming SSH connections.
If your system is running an older init system (such as SysVinit or Upstart), you can use the following command to restart the SSH service:
sudo service ssh restart
This command will stop and then start the SSH service.
In some cases, you may need to reload the SSH service instead of restarting it. To do this, use the following command:
sudo systemctl reload sshd
This command will reload the SSH daemon configuration without stopping the service or terminating any active connections.
Note that the exact method for restarting the SSH service may vary depending on the distribution of Linux/Unix you are using. However, in most cases, the above commands should work.