systemd-initctl.service, systemd-initctl.socket, systemd-initctl − /dev/initctl compatibility
systemd−initctl.service
systemd−initctl.socket
/usr/lib/systemd/systemd−initctl
systemd−initctl is a system service that implements compatibility with the /dev/initctl FIFO file system object, as implemented by the SysV init system. systemd−initctl is automatically activated on request and terminates itself when it is unused.
systemd(1)