fuser [portnumber]/[proto]

find process associated with a port

e.g. fuser 25/tcp (see which pid is listening on smtp)

13
By: wwest4
2009-02-05 17:11:04

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What Others Think

lsof -i tcp:25 gives a little more info; *both* fuser and lsof need root privileges to report processes other than the ones they run as, though (whereas netstat -ap will at least show you the port is open, though it won't find the pid without privileges...
eichin · 457 weeks and 6 days ago
For some reason fuser doesn't work sometimes, but lsof does. I will look into that later.
fsilveira · 457 weeks and 6 days 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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