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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

Commands using netstat from sorted by
Terminal - Commands using netstat - 119 results
netstat -nut | awk '$NF=="ESTABLISHED" {print $5}' | cut -d: -f1 | sort -u
2011-07-27 07:24:10
User: bitbasher
Functions: awk cut netstat sort

find all computer connected to my host through TCP connection

netstat -lantp | grep ESTABLISHED |awk '{print $5}' | awk -F: '{print $1}' | sort -u
2011-07-21 21:23:10
User: bitbasher
Functions: awk grep netstat sort

find all computer connected to my host through TCP connection.

netstat -nt | awk -F":" '{print $2}' | sort | uniq -c
netstat -ntu | awk ' $5 ~ /^[0-9]/ {print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
2011-07-04 20:23:21
User: letterj
Functions: awk cut netstat sort uniq
Tags: netstat

netstat has two lines of headers:

Active Internet connections (w/o servers)

Proto Recv-Q Send-Q Local Address Foreign Address State

Added a filter in the awk command to remove them

netstat -ntu | awk ' $5 ~ /^[0-9]/ {print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
netstat -nt | awk '{print $6}' | sort | uniq -c | sort -n -k 1 -r
netstat -n -f inet|awk '/\.389/{print $2}'|cut -f1-4 -d.|sort -u
watch -n 2 netstat -antu
netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
netstat -lnptu
while sleep 1; do date; (netstat -a -n | grep 80) ; done
netstat -a -o -n | grep 8080
2011-04-28 09:58:59
User: evandrix
Functions: grep netstat

I cannot run Tomcat from Eclipse. It says that there?s other process that is running on port 8080, but I don?t know what is the process, and how to stop it from the Services manger in Windows. So here?s how you can kill and find out what is that process:

To find out what PID 8080 was (hopefully not a trojan)

I typed tasklist /FI ?PID eq 8080″

taskkill /F /PID 2600

netstat -tulpnc
2011-04-20 07:30:31
User: altern
Functions: netstat

shows opened ports on machine in continuous mode (refreshing every 10 sec)

(netstat -atn | awk '{printf "%s\n%s\n", $4, $4}' | grep -oE '[0-9]*$'; seq 32768 61000) | sort -n | uniq -u | head -n 1
netstat -atn | perl -ane 'if ( $F[3] =~ /(\d+)$/ ) { $x{$1}=1 } END{ print( (grep {!$x{$_}} 32768..61000)[0] . "\n" )}'
netstat -atn | perl -0777 -ne [email protected] = /tcp.*?\:(\d+)\s+/imsg ; for $port (32768..61000) {if(!grep(/^$port$/, @ports)) { print $port; last } }'
2010-12-14 20:44:37
User: bashrc
Functions: last netstat perl

Not really better - just different ;)

There's probably a really simple solution out there somewhere...

netstat -lnp6 | grep :8080 | sed 's#^[^\/]*/\([a-z0-9]*\)#\1#'
2010-11-03 14:11:21
User: cicatriz
Functions: grep netstat sed

Gets the application's name that's listening from the port 8080 through IPv6

netstat -n | grep '^tcp.*<IP>:<PORT>' | tr " " | awk 'BEGIN{FS="( |:)"}{print $6}' | sort | uniq -c | sort -n -k1 | awk '{if ($1 >= 10){print $2}}'
2010-09-16 21:06:30
User: guptavi
Functions: awk grep netstat sort tr uniq

This command is primarily going to work on linux boxes.

and needs to be changed, for example



netstat -rn | awk '/UG/{print $2}'
2010-08-09 15:56:02
User: putnamhill
Functions: awk netstat

Tested on CentOS, Ubuntu, and MacOS.

netstat -rn | grep UG | tr -s " " | cut -d" " -f2
netstat -antp | grep 22
netstat -l -p --tcp | egrep -e 'www.*[0-9]{3,4}\/(apache2|httpd)' | awk '{print$7}'
netstat -an | grep ESTABLISHED | awk '\''{print $5}'\'' | awk -F: '\''{print $1}'\'' | sort | uniq -c | awk '\''{ printf("%s\t%s\t",$2,$1); for (i = 0; i < $1; i++) {printf("*")}; print ""}'\''
2010-07-09 00:25:45
User: mramos
Functions: awk grep netstat sort uniq

Displays a connection histogram of active tcp connections. Works even better under an alias. Thanks @Areis1 for sharing this one.

netstat -tunlp
2010-06-07 13:26:05
User: ender_x
Functions: netstat
Tags: netstat

Shows you all listening tcp/udp ports, and what program has them open(depending on rights)