A linear-drive cylinder actuated by a pull means or by a pressure medium has a cylinder tube, in which a piston is guided axially displaceably. The movement of the piston is guided outward via force-transmission means. The cylinder tube is closed on the end face by means of a closing plug. Both the cylinder tube and the closing plug each have a transverse bore. A fastening means, such as, for example, a holding tube or a bolt, passes through the mutually aligned transverse bores, so that the closing plug is secured axially in the cylinder tube.