How to kill a process running on particular port in Linux?

One liner

kill -9 $(lsof -t -i tcp:8080)

Explanation here: use a combination of lsof and kill

root@localhost:~# lsof -i tcp:8080
COMMAND   PID USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
java    23672 sine  238u  IPv6 3028222      0t0  TCP localhost:http-alt (LISTEN)

select pid and use kill

kill 23672

If you want to kill a process running on port number 8080 then first you need to find the 8080 port process identification number(PID) and then kill it. Run the following command to find 8080 port number PID:

sudo lsof -t -i:8080

Here,

• sudo - command to ask admin privilege(user id and password).
• lsof - list of files(Also used for to list related processes)
• -t - show only process ID
• -i - show only internet connections related process
• :8080 - show only processes in this port number

So you can now easily kill your PID using following command:

sudo kill -9 <PID>

Here,

• kill - command to kill the process
• -9 - forcefully

You can use one command to to kill a process on a specific port using the following command:

sudo kill -9 $(sudo lsof -t -i:8080)

For more you can see the following link How to kill a process on a specific port on linux

Best way to kill all processes on a specific port;

kill -9 $(sudo lsof -t -i:8080)

Get the PID of the task and kill it.

lsof -ti:8080 | xargs kill

First you need to do is run (replace with your port number):

fuser -k 3000/tcp

This will release the port. After you run the above command run:

service docker restart

And your problem is resolved.

Choose the port number and apply the grep in netstat command as shown below

netstat -ap | grep :7070

Console Output

tcp 0 0 :::7070 :::* LISTEN 3332/java

Kill the service based on PID ( Process Identification Number )

kill -9 3332

Run the following command to find 8080 port number PID:

sudo lsof -t -i:8080

You can now easily kill your PID using following command:

sudo kill -9

You can use one command to to kill a process on a specific port using the following command:

sudo kill -9 $(sudo lsof -t -i:8000)

You can know list of all ports running in system along with its details (pid, address etc.) :

netstat -tulpn

You can know details of a particular port number by providing port number in following command :

sudo netstat -lutnp | grep -w '{port_number}'

ex: sudo netstat -lutnp | grep -w '8080' Details will be provided like this :

Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name

if you want to kill a process using pid then : kill -9 {PID}

if you want to kill a process using port number : fuser -n tcp {port_number}

use sudo if you are not able to access any.

This will kill programs running on port 80

sudo fuser -k 80/tcp

Simply run this command. Don't forget to replace portnumber, with your port ;)

  kill -9 $(sudo lsof -t -i:portnumber)

sudo apt-get install psmisc (or sudo yum install psmisc)
sudo fuser 80/tcp

Result: 80/tcp: 1858 1867 1868 1869 1871

Kill process one by one

kill -9 1858

I'm working on a Yocto Linux system that has a limited set of available Linux tools. I wanted to kill the process that was using a particular port (1883).

First, to see what ports we are listening to I used the following command:

root@root:~# netstat -lt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       
tcp        0      0 0.0.0.0:hostmon         0.0.0.0:*               LISTEN      
tcp        0      0 localhost.localdomain:domain 0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:9080            0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:1883            0.0.0.0:*               LISTEN      
tcp        0      0 :::hostmon              :::*                    LISTEN      
tcp        0      0 localhost:domain        :::*                    LISTEN      
tcp        0      0 :::ssh                  :::*                    LISTEN      
tcp        0      0 :::1883                 :::*                    LISTEN      

Next, I found the name of the process using port 1883 in the following way:

root@root:~# fuser 1883/tcp
290 
root@root:~# ps | grep 290
  290 mosquitt 25508 S    /usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf
12141 root      8444 S    grep 290

As we can see above, it's the program /usr/sbin/mosquitto that's using port 1883.

Lastly, I killed the process:

root@root:~# systemctl stop mosquitto

I used systemctl becuase in this case it was a systemd service.

This is the solution for Windows:

C:\Users\Niroshan>netstat -ano|findstr "PID :8080"

Proto Local Address Foreign Address State PID
TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 18264

taskkill /pid 18264 /f

Other way with Git Bash:

stopProcessByPortNumber() {
port=":${1}"
portStrLine="$(netstat -ano | findstr LISTENING | findstr $port)"
processId="$(grep -oP '(\d+)(?!.*\d)' <<< $portStrLine)"
echo $processId
taskkill -PID $processId -F
}

1. first check the process netstat -lt
2. check process id fuser <port number>/tcp
3. kill the process running on the port kill <process id>

to build on what @veer7 said:

if you want to know what was on the port, do this before you kill it.

$ sudo netstat -plten |grep java
tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN      1000       906726      25296/java      
tcp6       0      0 :::8009                 :::*                    LISTEN      1000       907503      25296/java      
tcp6       0      0 :::8080                 :::*                    LISTEN      1000       907499      25296/java      
$ ps 25296
  PID TTY      STAT   TIME COMMAND
25296 ?        Sl     0:16 /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dcatalina.base=/hom

Use 'ps' and the number of the process that netstat reported back

In my case cent os has some issue in suggested answer. So I used following solution :

  ss -tanp | grep 65432 | head -1 | grep -Po "(?<=pid=).*(?=,)" | xargs kill

How to kill process if the service on the port is not responding

timeout 1 telnet localhost 8080 2>&1 | if grep -q 'Unable'; then sudo kill -9 $(sudo lsof -t -i:8080); fi

What it does

1. Start 'timeout' with one second, to make telnet exit
2. ' 2>&1 | ' pipe error-message without exiting
3. If error-message contains 'Unable', then run the kode to kill process locking port 8080

This can ble placed in a file and run regulary from 'sudo crontab'

Using this script, which is more user-friendly than other options and checks that the port is actually in use:

openport() {
  # sed = second line https://stackoverflow.com/a/1429628/152711
  # awk = second word https://unix.stackexchange.com/a/174038
  processId=$(lsof -i tcp:$1 | sed -n 2p | awk '{print $2}')
  if [ ! -z "$processId" ] # Non-null https://www.cyberciti.biz/faq/bash-shell-find-out-if-a-variable-has-null-value-or-not/
  then
    echo Killing $processId
    kill -9 $processId
  else
    echo No process found
  fi
}

This worked for me in mac

sudo kill -9 $(netstat -vnap tcp | grep PORT | awk -F " " '{print $9}')

Just this commands work for me:

ps -aux | grep 8000

and then:

sudo kill <PID>

In Windows, it will be netstat -ano | grep "8080" and we get the following message TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 10076

WE can kill the PID using taskkill /F /PID 10076