How to Show Detailed Info for Process ID Connecting to Internet from Mac OS X. This program lists all open files and file-like things. If you want more detailed information than what is shown in the above command string, we can revise the above command so that we get more raw data out of lsof by removing the pipes to other command line utilities, leaving us with unrefined details directly from lsof. In the following example we are listing all the processes running on port 80. lsof -i :80 In the following example we are listing all the process running on port 443. lsof -i :443 How to find a used TCP port and kill the associated process on your Mac. Mac app that shows all open files, directories, sockets, pipes and devices in use by all running processes. sudo lsof -i tcp:3000 Para o uso do Centos 7 From there it's easy to extract the name of the process since all the results will be the same: set theProcessName to word 1 of paragraph 2 of (do shell script "lsof +c 0 -p ") The '+c 0' tells lsof to print the entire command name (rather than just the first 8 characters). Conclusion # We have shown you several commands that you can use to check what ports are in use on your system, and how to find what process listens on a specific port. Basic Linux lsof command examples. 82499 82500. kill $(lsof -ti:3001,3000) Terminates processes 82499 and 82500 in single command. I searched around for a bit, but couldn't find out what this was, and why it's using so much processing power. Other useful Mac OS X lsof commands. That might make the process a bit upset. However, there are two ways we can get ourselves there. For such purposes macOS comes with the “lsof” command which stands for “list open files”. You wrote down “The name “java” doesn’t tell you anything, to … After identifying the process it is easy to terminate it using the “kill” command. kill $(lsof -ti:3000) //3000 is the port to be freed Kill multiple ports with single line command: kill $(lsof -ti:3000,3001) //3000 and 3001 are the ports to be freed lsof -ti:3000 . When it does that, lsof can allow more liberal device cache path formations. How do you find the parent PID of a process? Conclusion The /proc virtual file system and the AIX commands procfiles and pstat can be used to list information about files that are currently opened by a process. AIX 5.3 Apple Darwin 9 (Mac OS X 10.5) FreeBSD 4.9 for x86-based systems FreeBSD 7. There is a -t (terse) option in lsof, which seems to do exactly what you are looking for i.e. It's not Little Snitch Daemon, as I never installed that. You need to know the process id (pid) in this case. $ sudo lsof -ti tcp:80 1387 4538 4539 See man lsof-t specifies that lsof should produce terse output with process identifiers only and no header - e.g., so that the output may be piped to kill(1). $ netstat -an -ptcp | grep LISTEN tcp4 0 0 127.0.0.1.10000 *. Using lsof to Find Out What App is Using Your Webcam lsof. We could also use it to find which process used a networking port, since TCP/IP sockets use file descriptors. This is tip is a “safe” alternative to the previously mentioned open_ports utility. Kill Process on Port in Mac and Linux. opening the terminal; List the processes that are listening on a specific port by typing in the following command and executing it. lsof -i:(port number) In order to terminate any process that is using the port number to communicate, type in the following command and execute it. There is this process running under root called "lsof", and activity monitor wont let me quit or restart the process either (the option is grayed out). ... An lsof process that has setgid permission usually surrenders the permission after it has accessed the kernel memory devices. Grr. kill -9 . The command-line UNIX program lsof rides to the rescue.