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# launchctl
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# A command-line interface to Apple's launchd manager
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# for launch daemons (system-wide services) and launch agents (per-user programs).
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# launchd loads XML-based *.plist files placed in the appropriate locations,
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# and runs the corresponding commands according to their defined schedule.
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# Activate a user-specific agent to be loaded into launchd
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# whenever the user logs in:
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launchctl load ~/Library/LaunchAgents/my_script.plist
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# Activate an agent which requires root privileges to run
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# and/or should be loaded whenever any user logs in (note the absence of ~ in the path):
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sudo launchctl load /Library/LaunchAgents/root_script.plist
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# Activate a system-wide daemon to be loaded
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# whenever the system boots up (even if no user logs in):
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sudo launchctl load /Library/LaunchDaemons/system_daemon.plist
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# Show all loaded agents/daemons, with the PID if the process they specify is currently running,
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# and the exit code returned the last time they ran:
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launchctl list
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# Unload a currently loaded agent, e.g. to make changes
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# (note: the plist file is automatically loaded into launchd after a reboot and/or logging in):
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launchctl unload ~/Library/LaunchAgents/my_script.plist
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# Manually run a known (loaded) agent/daemon, even if it isn’t the right time
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# (note: this command uses the agent's label, rather than the filename):
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launchctl start my_script
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# Manually kill the process associated with a known agent/daemon, if it's running:
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launchctl stop my_script
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