For finding out if something is listening on a port and if so what the daemon is.

sockstat -4l
See what's listening on your IPv4 ports on FreeBSD.
Sample Output
USER     COMMAND    PID   FD PROTO  LOCAL ADDRESS         FOREIGN ADDRESS
www      lighttpd   8630  4  tcp4   *:80                  *:*
www      lighttpd   8630  5  tcp4   127.0.0.1:80          *:*
root     sendmail   2755  3  tcp4   127.0.0.1:25          *:*
root     sshd       2742  3  tcp4   *:22                  *:*

1
By: lme
2010-08-20 14:04:31

3 Alternatives + Submit Alt

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: