Lists all listening ports together with the PID of the associated process

netstat -tlnp
The PID will only be printed if you're holding a root equivalent ID.

179
By: fulat2k
2009-02-15 14:20:25

5 Alternatives + Submit Alt

  • This command is more portable than it's cousin netstat. It works well on all the BSDs, GNU/Linux, AIX and Mac OS X. You won't find lsof by default on Solaris or HPUX by default, but packages exist around the web for installation, if needed, and the command works as shown. This is the most portable command I can find that lists listening ports and their associated pid. Show Sample Output


    27
    lsof -Pan -i tcp -i udp
    atoponce · 2010-06-07 15:22:44 0
  • While `lsof` will work, why not use the tool designed explicitly for this job? (If not run as root, you will only see the names of PID you own) Show Sample Output


    8
    netstat -plnt
    DopeGhoti · 2011-09-30 19:56:32 0
  • Alternative of OJM snippet : This one show the IP too, where ports bind. It's very important, because if there's only 127.0.0.1 instead of 0.0.0.0, connections from internet are rejected.


    3
    netstat -nptl
    sputnick · 2009-12-11 10:23:43 0
  • Lists all opened sockets (not only listeners), no DNS resolution (so it's fast), the process id and the user holding the socket. Previous samples were limiting to TCP too, this also lists UDP listeners. Show Sample Output


    1
    netstat -anpe
    anarcat · 2011-12-06 18:27:09 0
  • Shows you all listening tcp/udp ports, and what program has them open(depending on rights)


    -2
    netstat -tunlp
    ender_x · 2010-06-07 13:26:05 0

What Others Think

BSD equivalent: sockstat -l4 (that's a small L)
lme · 482 weeks and 5 days ago
for german users there is a simple way to remember a similar command: netstat -tulpen (tulpen = tulips in german)
Hollow · 480 weeks ago
I prefer: netstat -paten also easy to remember :-) and gives not only listening ports, but also running processes and their owning users p.s. mnemonic of course is netstat -patent but 2nd t is simply redundant
vleolml · 475 weeks and 1 day ago
Following will also show UDP sockets: netstat -tulnp
realist · 461 weeks ago
lsof -Pan -i tcp -i udp
solarislackware · 445 weeks and 5 days ago
not for OS-X :(
ab · 434 weeks and 1 day ago
In OS-X I am using a little script: http://gist.github.com/330338
nuxlli · 431 weeks and 4 days ago
the switches in this command are gnu-specific. likely, the gnu netstat won't be running on any other operating systems than linux-based ones. a better utility that is more portable is lsof, as @solarislackware pointed out.
atoponce · 419 weeks and 1 day ago
Best to run: # netstat -plntu This way you see UDP conns too.
kernel01 · 253 weeks and 1 day 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?

You must be signed in to comment.

What's this?

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

Share Your Commands



Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: