Manually kill the process associated with a known agent/daemon, if it is running
launchctl
A command-line interface to Apple's `launchd` manager for launch daemons (system-wide services) and launch agents (per-user programs).
`launchd` loads XML-based `*.plist` files placed in the appropriate locations, and runs the corresponding commands according to their defined schedule.
More information: <https://manned.org/launchctl>.