ubuntu@lp1799697-c:~$ dpkg -l | grep knockd
ii knockd 0.7-1ubuntu1 amd64 small port-knock daemon
ubuntu@lp1799697-c:~$ sudo systemctl enable knockd
Synchronizing state of knockd.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable knockd
The unit files have no installation config (WantedBy, RequiredBy, Also, Alias
settings in the [Install] section, and DefaultInstance for template units).
This means they are not meant to be enabled using systemctl.
ubuntu@lp1799697-c:~$ dpkg -l | grep knockd
ii knockd 0.7-1ubuntu1.18.10.1 amd64 small port-knock daemon
ubuntu@lp1799697-c:~$ sudo systemctl enable knockd
Synchronizing state of knockd.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable knockd
ubuntu@lp1799697-c:~$
ubuntu@ lp1799697- c:~$ dpkg -l | grep knockd lp1799697- c:~$ sudo systemctl enable knockd systemd- sysv-install. systemd- sysv-install enable knockd
ii knockd 0.7-1ubuntu1 amd64 small port-knock daemon
ubuntu@
Synchronizing state of knockd.service with SysV service script with /lib/systemd/
Executing: /lib/systemd/
The unit files have no installation config (WantedBy, RequiredBy, Also, Alias
settings in the [Install] section, and DefaultInstance for template units).
This means they are not meant to be enabled using systemctl.
ubuntu@ lp1799697- c:~$ dpkg -l | grep knockd 18.10.1 amd64 small port-knock daemon lp1799697- c:~$ sudo systemctl enable knockd systemd- sysv-install. systemd- sysv-install enable knockd lp1799697- c:~$
ii knockd 0.7-1ubuntu1.
ubuntu@
Synchronizing state of knockd.service with SysV service script with /lib/systemd/
Executing: /lib/systemd/
ubuntu@