How to kill a process on a port on ubuntu

You want to use backtick, not regular tick:

sudo kill -9 `sudo lsof -t -i:9001`

If that doesn't work, you could also use $() for command interpolation:

sudo kill -9 $(sudo lsof -t -i:9001)

---

you can use

fuser -n tcp -k 9001 

see more details in wikipedia

---

FOR UBUNTU 1- Find what application/process is using the pro, type:

sudo netstat -lpn |grep :8080

and press Enter.

You will get an output similar to this one

tcp6       0      0 :::8080                 :::*                    LISTEN      6782/java

2- I have got the process Id, which is 6782, now this is the process that is using port 8080.

3- Kill the process, type: kill -p 6782

kill -9 6782

---

The best way to kill a port in the Ubuntu terminal is with the fuser command; e.g.:

fuser -k 9001/tcp

This sends SIGKILL by default.

---

There are some process which does not shown using normal netstat command, so you have to check it using sudo.

Do sudo netstat -lpn |grep :8080. Process running by system does not show PID, to get PID of this process you will have to run it using sudo

And then killl the process using port 8080. You may have to use sudo here as well. So to kill this process use sudo kill -9 PID

---

To kill a process running on Port number 9001

sudo kill -9 $(sudo lsof -t -i:9001)


lsof   - list of files(Also used for to list related processes)

-t     - show only process ID

-i     - show only internet connections related process

:9001  - show only processes in this port number

kill   - command to kill the process

-9     - forcefully

sudo   - command to ask admin privilege(user id and password).

for more you can visit my blog

---

Use killport command :

sh killport 9001 

To Download shell ,you can use wget :

wget https://cdn.rawgit.com/abdennour/miscs.sh/e0aac343/killport

---

To kill the process based on port first we have to find out the relevant pid for given port and kill using that pid,

In my case i wanted to get the pid(process id) of 3000 port:

netstat -ltnp | grep -w '3000'

then find pid which is listening to tcp

tcp6       0      0 :::3000                 :::*                    LISTEN      29972/node  

you will get pid 29972

To kill this pid use below command

kill -9 29972

pseudo code for kill process based on port

 netstat -ltnp | grep -w 'PORT'

and

kill -9 PID

---

Use this:

sudo kill -9 $(lsof -t -i:9001)

---

sudo kill -9 $(sudo lsof -t -i:9001) worked for me or you can use

sudo kill -9 `sudo lsof -t -i:9001` 

replace 9001 with port number you want.

---

Just enter the following command in the terminal

kill -9 $(lsof -t -i:3000)

---

Kill PORT:

sudo is important to show process id.

$ sudo netstat -antlp | grep 45136
tcp      0      0 0.0.0.0:45136         0.0.0.0:*        LISTEN           **-** 

$ kill -9 45136

---

Use the command

 netstat -plten |grep java

used grep java as tomcat uses java as their processes.

It will show the list of processes with port number and process id

tcp6       0      0 :::8080                 :::*                    LISTEN      
1000       30070621    16085/java

the number before /java is a process id. Now use kill command to kill the process

kill -9 16085

-9 implies the process will be killed forcefully.

---

If I was you,I would use

fuser -k -n tcp PORT
kill -9 PID

---

Try this:

lsof -i :port

or 

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

or

kill -9 <pid>

or 

sh killport 8000

---

It gives me an error OSError: [Errno 98] Address already in use. using the following method solved my error in Ubuntu.(VERSION="18.04.4 LTS (Bionic Beaver)")

$ sudo netstat -lpn |grep :5000
tcp        0      0 0.0.0.0:5000            0.0.0.0:*               LISTEN      25959/uwsgi   

$ fuser -k -n tcp 5000
5000/tcp:            25959
 

Hope it will help someone!

---

sudo kill `sudo lsof -t -i:9001`

you don't have to add the -9signal option

---

xargs can be a very useful command.

You can pipe commands like this

lsof -t -i :9001 | xargs sudo kill

What it does: it takes the output from the first command, in this case the process running on port, and will pass it to sudo kill.

---

get PID of process running on port 3000: lsof -i tcp:3000

kill th process kill -9 process_id

Example:
lsof -i tcp:3000
(PID in output = 5805)
kill -9 5805

use sudo if required

---

you can use following command in terminal
fuser -k 3000/tcp

---

Its two steps process:

Know process id on port no. 8080 (can be any) Kill process of that id 8689 (can be different) fuser -n tcp 8080 #o/p 8080/tcp 8689 kill -9 8689

---

you can work this using node

npm install freethenport -g

then

node freethenport 9001

---

Displays active TCP connections, ports on which the computer is listening.

netstat -tupln

It will list you all the connection along pid. Find and copy the pid and run the following command. Make sure you replace the with actual id in the following command.

kill -9 <copied pid>

-9 use to forcefully kill the connection.

---

When using newer versions of Ubuntu you won't have netcat anymore, instead you use ss

ss -lptpn | grep 9001   
sudo kill <replace-with-process-id>

---

sudo netstat -lpn |grep :8080

than get the PID of this process

kill -9

---

You can also use xargs. Just run the following,

sudo lsof -t -i:443 | xargs sudo kill -9

---