• Macos Port Monitor
• Macos List Mach Ports For Process 2

Interfaces with launchd to load, unload daemons/agents and generally control launchd. launchctl supports taking subcommands on the command line, interactively or even redirected from standard input.

Files

1. For macOS I use two commands together to show information about the processes listening on the machine and process connecting to remote servers. In other words, to check the listening ports and the current (TCP) connections on a host you could use the two following commands together. Netstat -p tcp -p udp 2. Lsof -n -i4TCP -i4UDP.
2. This information includes Mach task-special ports and exception ports (and when run against a DEVELOPMENT launchd, what names the ports are advertised as in the Mach bootstrap namespace, if they are known to launchd) and audit session con- text.
3. Oct 26, 2018  We can also develop a tool to monitor IPC data in macOS. So I extended this framework to implement an inline hook to inspect the Mach messages in macOS. A quick look at Mach Messages Mach ports are a kernel-provided inter-process communication (IPC) mechanism used heavily throughout the operating system. A Mach port is a unidirectional channel.
4. The simplest method is to use netstat: $ netstat -ap tcp Active Internet connections (including servers) Proto Recv-Q Send-Q Local Address Foreign Address (state) tcp4 0 0 10.0.2.23.58792 17.172.233.109.5223 ESTABLISHED tcp4 87 0 myiMacathome.55481 stackoverflow.co.http ESTABLISHED tcp4 116 0 myiMacathome.55478 stackoverflow.co.http ESTABLISHED tcp4 58 0.

It's a process called GoogleDes with a pid of 271. The process is owned by user ezra. 14u means it is file descriptor number 14 and is open for update. The file type is an IP v4 socket and the next bit is the address in the kernel of the file structure. The 0t0 is the offset within the file which is a socket (being listened to) so probably.

~/Library/LaunchAgents Per-user agents provided by the user.
/Library/LaunchAgents Per-user agents provided by the administrator.
/Library/LaunchDaemons System wide daemons provided by the administrator.
/System/Library/LaunchAgents macOS Per-user agents.
/System/Library/LaunchDaemons macOS System wide daemons.

launchd no longer loads configuration files from the network

Exit Codes

launchctl will exit with status 0 if the subcommand succeeded.
Otherwise, it will exit with an error code that can be given to the error subcommand to be decoded into human-readable form.

The syntax for launchctl changed in macOS 10.10 (Yosemite) the examples below show both the old and new syntax for starting and stopping launch scripts (services). The new syntax generally does not require sudo.

Examples

Display the launch scripts for all users that are currently loaded/running (legacy syntax):
$ sudo launchctl list
Display the launch scripts that are currently loaded for user ID 504 (new syntax):
$ launchctl print gui/504

Display the launch scripts that are currently loaded/running for root:
$ launchctl print system

Enable remote SSH login (legacy syntax):
$ sudo launchctl load -w /System/Library/LaunchDaemons/ssh.plist

Enable remote SSH login for login 504 (new syntax):
$ launchctl bootstrap gui/504 /System/Library/LaunchDaemons/ssh.plist

Disable remote SSH login (legacy syntax):
$ sudo launchctl unload -w /System/Library/LaunchDaemons/ssh.plist

Disable remote SSH login for login 504 (new syntax):
$ launchctl bootout gui/504 /System/Library/LaunchDaemons/ssh.plist

Disable the macOS Notification Centre (legacy syntax):
$ launchctl unload -w /System/Library/LaunchAgents/com.apple.notificationcenterui.plist
$ killall NotificationCenter

Disable the macOS Notification Centre for login 504 (new syntax):
$ launchctl bootout gui/504 /System/Library/LaunchAgents/com.apple.notificationcenterui.plist
$ killall NotificationCenter
An alternative is to turn on the Notification “Do Not Disturb” from the Menu Bar of macOS which lasts for 1 day.

Re-enable the macOS Notification Centre (legacy syntax):
$ launchctl load -w /System/Library/LaunchAgents/com.apple.notificationcenterui.plist
Then double-click '/System/Library/CoreServices/Notification Center” to launch it again.

Re-enable the macOS Notification Centre for login 504 (new syntax):
$ launchctl bootstrap gui/504 /System/Library/LaunchAgents/com.apple.notificationcenterui.plist
Then double-click '/System/Library/CoreServices/Notification Center” to launch it again.

“A good rule for rocket experimenters to follow is this: always assume that it will explode” ~ 'Astronautics,' issue 38, October 1937

Related macOS commands:

Macos Port Monitor

The macOS equivalent of Windows services is Launchd.
The macOS equivalent of services.msc on Windows is launchctl.
Launchd.info - Description of launchd, agents and daemons.
The daemons managed by launchd can be on demand or can be triggered periodically (this is configurable in launchd.plist).
launchd.plist(5), launchd.conf(5), launchd(8).

Macos List Mach Ports For Process 2