How can I tell which process is using port 8888? I have an NKE and my process is needing to connect to it. Every now and then I get bind socket error, 127.0.0.1:8888 is in use...
Any ideas?
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Are you really on MacOS? Props, man.– Chris LutzJun 30, 2011 at 21:55
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Please do not cross-post on multiple sites - decide which site is best for your question, and then write the question for that site's audience. Thanks.– nhinkleJun 30, 2011 at 22:58
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2 Answers
@Somantra's answer is close, but won't quite work. Try:
sudo lsof -i:8888
sudo may be needed so lsof can see processes not owned by you; also, grepping lsof's output will fail unless you search for the service name associated with port 8888 (it's "ddi-tcp-1").
answered Jul 1, 2011 at 0:35
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great now that I know what process is owning that, can I just kill it so that application can use that port to communicate with my NKE? Will ddi-tcp-1 just pick another port to use? and why do i only run into this problem on OS Mac 1.0.5?– rezaJul 5, 2011 at 15:14
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It depends on what process is using the port, and how that process is managed -- if it's something controlled by launchd, it's probably configured to relaunch if it exits for any reason. What's the process using it? Here is an example of tracking down where a launchd item is being controlled and shutting it down. Jul 5, 2011 at 20:12
This is probably what you are looking for.
lsof | grep ":8888"
NOTE: Thanks @Gordon Davisson, I forgot about the alias I added which made the command above work for me.
alias lsof='sudo lsof -Pni4 | grep LISTEN'
