Oct 03, 2013  In the world of Linux, you could use netstat to list all ports that are open on your system. I tend to use the following in Linux: netstat -aep grep ':.' However, netstat in Mac OS X behaves extremely differently. To be able to list open ports on Mac OS X, you could use something along the lines of. Apr 21, 2020  Linux Find Out Which Process Is Listening Upon a Port You can the following programs to find out about port numbers and its associated process: netstat command or ss command – a command-line tool that displays network connections, routing.

List open files.

Jul 09, 2011  You can watch all open network connections for both incoming and outgoing transfers using a free command line utility called openports.sh. OpenPorts is much more useful than using lsof to list open internet connectionsbecause it provides extensive network information in a very easy to read format, including what program or process is opening the connection, which port and user, the number. May 30, 2019  In macOS you can also use the Terminal to work with the network, but it is much easier to run the Network utility located in the Utilities folder. In this article we will look at the operation of the Mac Port Scanner in detail. Port Scanner on Mac. Port scanner is a software tool designed to search for hosts on a network with the right ports open. Jul 11, 2011 The problem with installing and using openports is that it is a third party script running as root, and for many users that is unacceptable. Here is a method that is native to Mac OS X and doesn’t even require root access to watch network connections. Jun 02, 2011  This command shows a list of open files. The -i option checks for internet addresses with the colon symbol representing a port (instead of an actual IP address). Note, I've only used this on Mac OS X. I'm not sure if there's an equivalent for.nix or if it's available in some package.

An open file can be a regular file, a directory, a block special file, a character special file, an executing text reference, a library, a stream or a network file (Internet socket, NFS file or UNIX domain socket.) A specific file or all the files in a file system can be selected by path.

On macOS, lsof only shows your own processes unless running as root with sudo.

Instead of a formatted display, lsof can produce output that can be parsed by other programs. See the -F, option.

In addition to producing a single output list, lsof will run in repeat mode. In repeat mode it will produce output, delay, then repeat the output operation until stopped with an interrupt or quit signal. See the + -r [t] option.

Examples

List all open files, if you need to filter the output, pipe this into grep:

$ lsof

Show who is using a file, list all the processes that are using a file, or several files:
$ lsof /path/to/file1
$ lsof /path/to/file1 /path/to/file2

To list all open files on a device:
$ lsof /dev/hd4

List all open files by a user, or users:
$ lsof -u ashley
$ lsof -u ashley, pete
$ lsof -u ashley -u pete

Options can be combined, the default is to OR between options unless you also specify -a which will AND the options.
List all open files for login name 'ashley', or user ID 6464, or process 123, or process 456:
$ lsof -p 123,456 -u 6464,ashley

Find the files opened by a program/process whose command name begins with 'apache':
$ lsof -c apache

List all network connections:
$ lsof -i

List the files opened by all users except root. The caret here ^ specifies NOT:
$ lsof -u ^root

List the processes that are using port 80 (HTTP activity):
$ lsof -i :80

lsof repeat mode, add -r and a number in seconds to any lsof command to make it repeat.
Monitoring port 80 can be useful to spot processes or websites that are constantly dialling home (cough facebook):
$ lsof -i :80 -r 2/download-diskmaker-x-for-el-capitan.html.

To list all open files whose PID is 1234 AND are in use via the IPv4 network:
$ lsof -i 4 -a -p 1234

List only open IPv6 network files:
$ lsof -i 6

List all files using any protocol on ports 513, 514, or 515 of host ss64.com:
$ lsof -i @ss64.com:513-515

To list all files using any protocol on any port of mace.cc.purdue.edu (cc.purdue.edu is the default domain), use:
$ lsof -i @mace

To list files using port 19421 like the Zoom video conferencing app, this returns the PID which you can then kill.
$ lsof -i :19421

Lists memory-mapped files with the special value mem:
$ lsof -d mem

List programs loaded in memory and executing with the special value txt:
$ lsof -d txt

To send a SIGHUP to the processes that have /u/abe/bar open, use:
$ kill -HUP 'lsof -t /u/abe/bar'

Caffe download for macos. This software support package provides functions for importing pretrained models as well as layers of Convolutional Neural Networks (CNNs) from Caffe. To install thissupport package, use the Add-OnExplorer.=:-(??? Produce the following error:net = importCaffeNetwork(protofile,datafile)Error using importCaffeNetwork (line 77)importCaffeNetwork requires the Neural Network Toolbox Importer for Caffe Models support package. Install on HPC using command line would be great.:1) first: (no command line): choose 'download' (whearas install in a graphical session)2) transfer the package to your HPC main node (default download directory: /MathWorks/SupportedPackages3)./installsupportsoftware.sh -matlabroot $MROOT/R2017a4) test (the previous example on this page).

To find any open file, including an open UNIX domain socket file, with the name /dev/log, use:
$ lsof /dev/log

Find processes with open files on the NFS file system named /nfs/mount/point whose server is inaccessible, and presuming your mount table supplies the device number for /nfs/mount/point:
$ lsof -b /nfs/mount/point

To do the preceding search with warning messages suppressed:
$ lsof -bw /nfs/mount/point

Ignore the device cache file:
$ lsof -Di

Obtain PID and command name field output for each process, file descriptor, file device number, and file inode number for each file of each process:
$ lsof -FpcfDi

List the files at descriptors 1 and 3 of every process running the lsof command for login ID 'abe' every 10 seconds:
$ lsof -c lsof -a -d 1 -d 3 -u abe -r10

To list the current working directory of processes running a command that is exactly four characters long and has an 'o' or 'O' in character three, use this regular expression form of the -c c option:
$ lsof -c /^.o.$/i -a -d cwd

To find an IP version 4 socket file by its associated numeric dot-form address, use:
$ lsof -i@128.210.15.17

Macos List Ports For Process List

'It is when we all play safe that we create a world of the utmost insecurity' ~ Dag Hammarskjold, United Nations secretary general

lsof FAQ - full documentation.

Macos List Ports For Process Problems

Related macOS commands:

sudo - Execute a command as another user.
kill - Stop a process from running.
netstat - show network status.
opensnoop - Snoop file opens as they occur.
ps - List running processes (returns PID).
uname - Print the Darwin OS Kernel version / release / machine name.

Macos Port Monitor