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The fuser command on Mac OS X is rather primitive and can't check for processes listening on a specific port. Does anybody know a good alternative? It it enough to know which process listening on that one port.
Martin
Posted 2010-12-23T16:57:04.543
Reputation: 305
14
As @vcsjones said in the comments, lsof is the tool for this:
$ sudo lsof -i tcp:80
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
Safari 804 gordon 16u IPv4 0x05a2cec8 0t0 TCP 192.168.6.3:50542->stackoverflow.com:http (ESTABLISHED)
httpd 874 root 3u IPv6 0x05a2a940 0t0 TCP *:http (LISTEN)
httpd 878 _www 3u IPv6 0x05a2a940 0t0 TCP *:http (LISTEN)
Without the -i, it shows all open files; with just -i it shows network files only; if you specify something after the -i you can restrict by any or all of: IPv4/6, TCP/UDP, hostname or IP, and port number/service name.
Gordon Davisson
Posted 2010-12-23T16:57:04.543
Reputation: 28 538
2Just in case it's useful for someone like me looking to blindly kill all processes using a given port: lsof -i tcp:5000 | grep LISTEN | awk '{print $2}' | xargs kill kills all processes listening on port 5000 – JeremyKun – 2016-06-28T21:02:45.337
1Try
sudo lsof -i -P– vcsjones – 2010-12-23T17:02:21.760I was under the impression that lsof
only works when a task actually connects to the port. Besides one would need at least a| grep portno` as well to get a meaningful result. – Martin – 2010-12-23T18:09:21.530