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commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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Universal configuration monitoring and system of record for IT.

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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!

Top Tags



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

what?s running on a given port on your machine?

Terminal - what?s running on a given port on your machine?
lsof -i -n -P | grep :80
2009-07-17 15:56:19
User: reeyuk
Functions: grep
what?s running on a given port on your machine?


There are 4 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Why use grep?

lsof -i:80 -n -P

Comment by din7 379 weeks ago

Just a small hint for FreeBSD users: The sockstat command (part of the FreeBSD base system) comes very handy for things like this. It displays the network sockets in a clear and concise format.

sockstat -4p 80

Of course you can also use the lsof command (it must be installed from the ports collection), but personally I like sockstat better for things like this. I also keep forgetting the weird options syntax of lsof, but maybe that's just me ...

Comment by inof 378 weeks and 3 days ago

Your point of view

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