Kill Gripper Server

In the same way that we can use pkill -9 to kill the robot server before launching a new one, it would be really helpful to do something similar with the gripper server. Im using a headless NUC and launch servers in a sub process, and when I try launching a new gripper server it fails because there's already an existing gripper server (which sometimes has broken down, but is still running).

Is there an equivalent terminal command to kill this gripper server?

Thank you as always!