find the process that is using a certain port e.g. port 3000

lsof -P | grep ':3000'

By: thisduck
2009-03-23 18:41:24

What Others Think

Thanks for the good stuff
haivu · 593 weeks and 1 day ago
This is simpler: lsof -i :3000 Or, if you still want numbered ports: lsof -Pi :3000
Viaken · 593 weeks and 1 day ago
netstat's -p is also useful for this sort of investigation.
allengarvin · 593 weeks ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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