How to kill process on port

How to kill process on port

Sometimes a program or an application stops responding or you are working on a terminal and want to stop a process. In such cases you need to terminate or kill that process. Linux provides a kill command that takes the PID or Process Id of the process and terminates it.

# use the PID from above command and stop the process
sudo kill PID

Above two commands can be merged into a single command as

# use apt
sudo apt install lsof

# or use yum
sudo yum install lsof

This will kill the process running on port 8080 and listening on tcp.
If fuser is not already installed on your system, then install it using apt or yum as shown below

# use apt
sudo apt install psmisc

# or use yum
sudo yum install psmisc

If netstat is not already installed on your system, then install it using apt or yum as shown below

# use apt
sudo apt install net-tools

# or use yum
sudo apt install net-tools

Method 4 : Using ss command
ss command can also be used to fetch the details of a running process on linux. Its output when chained with grep and the required port, will show only the processes running on the given port as shown below.

If you are logged in as a root user which has all the privileges, then you are not required to use sudo with any of the above commands.
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Windows Kill Process By PORT Number [duplicate]

I’m using embedded Tomcat server in Spring Tool Suite IDE. My problem is when I run my project there is an error as follows,

There are some similar questions but none of the answers not working for me.

2 Answers 2

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Run command-line as an Administrator

Please Make sure that new port you are going to set for your Application doesn’t listen to any other process

Solution 3: Another way is to terminate the process (in IDE) and clean and rebuild project.

UPDATE:

For solution 2, Please Make sure that new port you are going to set for your Application doesn’t listen to any other process.

How to check Port Status?

PowerShell

cmd

-a Displays all connections and listening ports.

-b Displays the executable involved in creating each connection or listening port. In some cases, well-known executables host multiple independent components, and in these cases, the sequence of components involved in creating the connection or listening port is displayed. In this case, the executable name is in [] at the bottom, on top is the component it called, and so forth until TCP/IP was reached. Note that this option can be time-consuming and will fail unless you have sufficient permissions.

-n Displays addresses and port numbers in numerical form.

-o Displays the owning process ID associated with each connection.

Kill process running on port 80

This is the process I want to kill:

5 Answers 5

There are several ways to find which running process is using a port.

Using fuser it will give the PID(s) of the multiple instances associated with the listening port.

After finding out, you can either stop or kill the process(es).

You can also find the PIDs and more details using lsof

To limit to sockets that listen on port 80 (as opposed to clients that connect to port 80):

To kill them automatically:

Here is a oneliner that shows the command to run :

Replace echo by sudo for the process to actually be killed.

Three options for listing open ports are offered in jsh’s whatisonport :

I prefer netstat because it is fast, concise, and can list ports opened by other users. (Although it will still need superuser/user privileges to list the names and PIDs of such processes.)

Outputs

Killing the process

And we could even pass those PIDs to kill :

However there is often a potential for false positive when using regexps, so I would recommend just looking at the initial output of netstat and then manually deciding whether or not to run:

See also

I have another script called listopenports which may be of interest.

So it is most probably a webserver. The name you have is httpd and man httpd should give you the large hint that it is the Apache binary which fits. Apache is one of the big players, it has some comfortable management-programs available but you don’t need them for a mere start/stop action.

If you just want to stop it temporarily try, in the console

Most of the programs you find with netstat can be handled in that way. Some cannot and some don’t even have a man-page but those are rare.

13 Answers 13

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Open command prompt and run the following commands

, here 3116 is the process ID

Here’s a command to get you started:

How this works

This lets you split up each line by whitespace, and take the 4th chunk in that line, and stuffs it into %variable (in our case, %%P ). delims looks empty, but that extra space is actually significant.

Just run it and find out. According to the command line help, it «Displays all connections and listening ports.», «Displays addresses and port numbers in numerical form.», and «Displays the owning process ID associated with each connection.». I just used these options since someone else suggested it, and it happened to work 🙂

This kills a running task, using the process ID.

This is required in batch files. If you did this on the command prompt, you would use %P instead.

Freeing up a TCP/IP port? [closed]

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11 Answers 11

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As the others have said, you’ll have to kill all processes that are listening on that port. The easiest way to do that would be to use the fuser(1) command. For example, to see all of the processes listening for HTTP requests on port 80 (run as root or use sudo ):

To kill a specific port in Linux use the below command

replace Port_Number with your occupied port.

In terminal type :

and then execute :

Worked on Macbook

You can use tcpkill (part of the dsniff package) to kill the connection that’s on the port you need:

To check all ports:

To close an open port:

In both cases you can use the sudo command if needed.

Depending on what you’re actually trying to achieve, solutions to that problem will vary based on the processes holding those ports. For example, you may need to disable services (assuming they’re unneeded) or configure them to use a different port (if you do need them but you need that port more).

Kill the process that is listening to the port in question. I believe netstat shows you process ids.

the last column has the process

If you really want to kill a process immediately, you send it a KILL signal instead of a TERM signal (the latter a request to stop, the first will take effect immediately without any cleanup). It is easy to do:

Be aware however that depending on the program you are stopping, its state may get badly corrupted when doing so. You normally only want to send a KILL signal when normal termination does not work. I’m wondering what the underlying problem is that you try to solve and whether killing is the right solution.

I think the only way will be to stop the process which has opened the port.

Shutting down the computer always kills the process for me.