Welcome to the most active Linux Forum on the web. Welcome to LinuxQuestions. You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today! Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. Are you new to LinuxQuestions.
If you need to reset your password, click here. Having a problem logging in? Please visit this page to clear all LQ-related cookies. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration.
This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Click Here to receive this Complete Guide absolutely free.
Hi As I would like to stop the process which is running on port in linux server. Can you tell me which is the command for it. Thread Tools. BB code is On. Smilies are On. All times are GMT The time now is AM. Open Source Consulting Domain Registration.
Search Blogs. Mark Forums Read. How to kill the process running on specific port in linux. User Name. Remember Me? Linux - General This Linux forum is for general Linux questions and discussion. If it is Linux Related and doesn't seem to fit in any other forum then this is the place. How to kill the process running on specific port in linux Hi As I would like to stop the process which is running on port in linux server. View Public Profile. View Review Entries. Find More Posts by rajaniyer Find More Posts by unSpawn.
Find More Posts by pedro. Posting Rules. Similar Threads.In this short tutorial, we will look at how to kill a process by port number on Windows. I am doing a lot of Java development these days and I have about 5 different applications that I may fire up during a day and because they all run on my local machine most of them use port by default.
Once in a while, I will forget to kill an application. When I try and start another application I will receive this error. If you need to kill a process manually on Windows it's actually pretty easy.
First, fire up a command prompt and type the following command. To kill the process we need to find the PID of the process in question. I just run down the list by port until I find port and here you will see the process id was Finally, with the PID we can run the following command to kill the process.
I created this website as a place to document my journey as I learn new things and share them with you. I have a real passion for teaching and I hope that one of blog posts, videos or courses helps you solve a problem or learn something new. Hope this helps! Follow me on TwitterLinkedInor sign up for my newsletter.Get the latest tutorials on SysAdmin and open source topics.
Write for DigitalOcean You get paid, we donate to tech non-profits. DigitalOcean Meetups Find and meet other developers in your city. Become an author. A Linux server, like any other computer you may be familiar with, runs applications. In this guide, we will discuss some simple aspects of process management.
Linux provides an abundant collection of tools for this purpose. We will explore these ideas on an Ubuntu The easiest way to find out what processes are running on your server is to run the top command:. The top chunk of information give system statistics, such as system load and the total number of tasks. An improved version of topcalled htopis available in the repositories.
Install it with this command:. You can learn more about how to use top and htop here. Both top and htop provide a nice interface to view running processes similar to a graphical task manager. However, these tools are not always flexible enough to adequately cover all scenarios. A powerful command called ps is often the answer to these problems. This output shows all of the processes associated with the current user and terminal session. This makes sense because we are only running bash and ps with this terminal currently.
These options tell ps to show processes owned by all users regardless of their terminal association in a user-friendly format.
To see a tree view, where hierarchal relationships are illustrated, we can run the command with these options:.
This is how the operating system identifies and keeps track of processes. This process is then responsible for spawning every other process on the system. The later processes are given larger PID numbers. Parent processes have a PPIDwhich you can see in the column headers in many process management applications, including tophtop and ps.Find and Kill process locking port 9200 on Mac OS X macOS
Any communication between the user and the operating system about processes involves translating between process names and PIDs at some point during the operation. This is why utilities tell you the PID. Creating a child process happens in two steps: forkwhich creates new address space and copies the resources owned by the parent via copy-on-write to be available to the child process; and execwhich loads an executable into the address space and executes it.
In the event that a child process dies before its parent, the child becomes a zombie until the parent has collected information about it or indicated to the kernel that it does not need that information. The resources from the child process will then be freed. If the parent process dies before the child, however, the child will be adopted by init, though it can also be reassigned to another process. All processes in Linux respond to signals.
Signals are an os-level way of telling programs to terminate or modify their behavior. This sends the TERM signal to the process. The TERM signal tells the process to please terminate.A port is a logical entity which represents an endpoint of communication and is associated with a given process or service in an operating system. Once installed, you can use it with grep command to find the process or service listening on a particular port in Linux as follows specify the port.
To install it on your system, type the command below. Then find the process name using PID number with the ps command like so. TecMint is the fastest growing and most trusted community site for any kind of Linux Articles, Guides and Books on the web. Millions of people visit TecMint! If you like what you are reading, please consider buying us a coffee or 2 as a token of appreciation.
We are thankful for your never ending support. Tags: Linux Tricks. View all Posts. Aaron Kili is a Linux and F. S enthusiast, an upcoming Linux SysAdmin, web developer, and currently a content creator for TecMint who loves working with computers and strongly believes in sharing knowledge. Your name can also be listed here. Got a tip?
Submit it here to become an TecMint author. On my Ubuntu If I run it without sudo — I get no result. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.
Notify me of followup comments via e-mail. You can also subscribe without commenting. This site uses Akismet to reduce spam. Learn how your comment data is processed. How to Install Nagios 4.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. In most cases, the only way to identify the process to be stopped or getting its PID is by using the specific port on which it is running or listening. Thus, first you must be able to find the process listening on a specific port and then kill it. This post will outline different commands to find and kill a process running on a port in linux. Method 1 : Using lsof lsof stands for List of Opened Files and with appropriate options or flags, it can be used to return the PID of a process on some given port.
Once you get the PID, use kill command to stop that process. Below example will terminate the process listening on port. Some times the process does not terminate by simply using kill. Use -9 flag to force stop the process as. This will find the process running on port and kill it. Notice the -t option.
Windows Kill Process By Port Number
If lsof is not already installed on your system, then install it using apt or yum as shown below. Method 2 : Using fuser command fuser command accepts the port number and protocol as its arguments and returns the details of the process running on that port for the protocol. It has a -k flag which is used for killing a process.
Thus, with this command you do not need to use or merge two commands as there is a built in option for this. This will kill the process running on port and listening on tcp. If fuser is not already installed on your system, then install it using apt or yum as shown below. Method 3 : Using netstat netstat command can also fetch system processes. Its output when chained with grep command filters it as per the grep expression.
Thus, below command will fetch only those processes which contain or are running on port Here -l and -p are the flags of netstat where -l finds only listening processes and -p also fetches the PID of the process. Copy the PID of the process from the above command and terminate it with kill as. If netstat is not already installed on your system, then install it using apt or yum as shown below.
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.
Here -l flag will list only Listening processes, -t will show the processes that are running over tcp and -p is required to display the PID of the processes. Copy the PID from the last command execution and use it to kill the required process 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.
It only takes a minute to sign up. On Linux, you must be root or the owner of the process to get the information you desire. As such, for processes running as another user, prepending sudo is most of what you need. In addition to that, on modern Linux systems, ss is tool to use to do this:. I am using "CentOS 7 minimal" which has nor netstat neither lsof. But a lot of linux distributions have the socket statistics command i.
LINUX :: Kill a Process Id by looking up the port
Running the command with sudo would give you the PID. On my development machine I get:. And as mentioned in other answers you can also use the ss or the lsof commands.
Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Finding the PID of the process using a specific port? Ask Question. Asked 6 years, 3 months ago. Active 1 year, 3 months ago. Viewed k times. I am installing hadoop on my Ubuntu system. When I start it, it reports that port is busy. I used: netstat -nlp grep to see if such a port exists and I got this: tcp 0 0 See this wilddiary.
Active 3 years, 2 months ago. Viewed 71k times. SamB 7, 4 4 gold badges 41 41 silver badges 52 52 bronze badges. Jonathan Jonathan 7, 7 7 gold badges 41 41 silver badges 58 58 bronze badges. Why do you want an alias and not a bash function? I would make a function which first do a kill -TERM then do a kill -KILL because it is un-proper to kill processes without giving them the opportunity to terminate properly SteveChambers how is this a duplicate when it was written before the answer it is linked to?
Active Oldest Votes. SamB SamB 7, 4 4 gold badges 41 41 silver badges 52 52 bronze badges. The reason I chose this as the answer is because I later found that lsof -i can bring back multiple processes when I access the server in the web browser e. One thing I noticed was that fuser doesn't differentiate between local and remote connections - so I think if you ever had a process connected to a remote port it'd get killed too.
For what it's worth. You can tell it to use a different signal with for instance: fuser -k -TERM -n tcp For some reason, this does not work for me. After I issue the command and I do netstat -tulpn grepI still get the pid of the process. Hai Vu Hai Vu I would also use tcp as in lsof -i tcp in scripts to be more precise. Niklas B. Don't forget the -r on xargs. Feb 6 '12 at If you have something like this in a shell script with 'set -e', or '!
My motto is: succeed quietly if you can, fail elegantly if you have to - but always return a useful exit code. I only ran across this because I tested the lsof version.