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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Watch Network Service Activity in Real-time

Terminal - Watch Network Service Activity in Real-time
lsof -i
2009-04-25 14:24:04
User: hank
Watch Network Service Activity in Real-time


There are 9 alternatives - vote for the best!

Terminal - Alternatives
lsof -i
2009-06-30 22:36:00

I prefer to use this and not the -n variety, so I get DNS-resolved hostnames. Nice when I'm trying to figure out who's got that port open.

netstat -ntauple

Know a better way?

If you can do better, submit your command here.

What others think

try iptraf. lsof -i is a one time deal. real-time would imply that you could see network activity as it happens in a continuous manner. iptraf is a basic utility that lets you do just that.

Comment by linuxrawkstar 409 weeks and 3 days ago

Thanks - iptraf is pretty effin cool!

Comment by hank 409 weeks and 3 days ago

To make it keep running until you hit ctrl-c:

lsof -i -r
Comment by unixmonkey3441 409 weeks and 3 days ago

awesome! I also like the output of the slightly longer:

watch "lsof -i"

Comment by icetek 409 weeks and 1 day ago

ugh.. noob alert, it should be:

watch "lsof -i"
Comment by icetek 409 weeks and 1 day ago

Same thing using ip address instead of dns hostname

lsof -Pan -i tcp -i udp

Comment by solarislackware 378 weeks ago

lsof -Pni4

works for me

Comment by al3x 191 weeks and 6 days ago

Your point of view

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