Stop node js program from command line

Question

I have a simple TCP server that listens on a port   var net   require  net     var server   net createServer function socket        socket end  Hello  n         server listen 7777     I start it with node server js and then close it with Ctrl   Z on Mac  When I try to run it again with node server js I get this error message   node js 201         throw e     process nextTick error  or  error  event on first tick             Error  listen EADDRINUSE at errnoException  net js 670 11  at Array 0  net js 771 26  at EventEmitter  tickCallback  node js 192 41    Am I closing the program the wrong way  How can I prevent this from happening

User · Answer

Though this is a late answer  I found this from NodeJS docs      The  exit  event is emitted when the REPL is exited either by receiving the  exit command as input  the user pressing  lt ctrl gt -C twice to signal SIGINT  or by pressing  lt ctrl gt -D to signal  end  on the input stream  The listener callback is invoked without any arguments     So to summarize you can exit by    Typing  exit in nodejs REPL  Pressing  lt ctrl gt -C twice   pressing  lt ctrl gt -D   process exit 0  meaning a natural exit from REPL  If you want to return any other status you can return a non zero number   process kill process pid  is the way to kill using nodejs api from within your code or from REPL

User · Answer

Resume and kill the process  Ctrl Z suspends it  which means it is still running as a suspended background process  You are likely now at a terminal prompt     Give the command fg to resume the process in the foreground   type Ctrl C to properly kill it     Alternatively  you can kill it manually like this   NOTE  the following commands may require root  so sudo     is your friend   pkill -9 node  or  if you don t have pkill  this may work  killall node  or perhaps this  kill   ps -e   grep node   awk   print  1     sometimes the process will list its own grep  in which case you ll need  kill   ps -e   grep dmn   awk   print  2        h t  ruffin from the comments on the question itself  I had the same issue and his comment helped me solve it myself

User · Answer

If you are running Node js interactively  the REPL    Ctrl   C will take back you to   prompt then type   process exit     or just use Ctrl   D

User · Answer

For MacOS   Open terminal Run the below code and hit enter   sudo kill   sudo lsof -t -i 4200

User · Answer

Late answer but on windows  opening up the task manager with CTRL ALT DEL then killing Node js processes will solve this error

User · Answer

sudo killall node in another terminal works on mac  while killall node not working      killall node No matching processes belonging to you were found

User · Answer

you can work following command to be specific in localserver kill here  8000      http   localhost 8000  kill PID processId       lsof -i tcp 8000   It will give you following groups of TCPs      COMMAND             PID            USER        FD      TYPE     DEVICE     SIZE OFF     NODE NAME      node               21521          ubuntu      12u      IPv6     345668     0t0        TCP   8000  LISTEN      kill -9 21521   It will kill processId corresponding to TCP  8000

User · Answer

if you are using VS Code and terminal select node from the right side dropdown first and then do Ctrl   C  Then It will work    Press y when you are prompted      Thanks

User · Answer

To end the program  you should be using Ctrl   C   If you do that  it sends SIGINT  which allows the program to end gracefully  unbinding from any ports it is listening on   See also   https   superuser com a 262948 48624

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you can type  exit  to quit node js REPL

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I ran into an issue where I have multiple node servers running  and I want to just kill one of them and redeploy it from a script   Note  This example is in a bash shell on Mac   To do so I make sure to make my node call as specific as possible  For example rather than calling node server js from the apps directory  I call node app name 1 app server js  Then I can kill it using   kill -9   ps aux   grep  node  app name 1 app server js    awk   print  2     This will only kill the node process running app name 1 app server js   If you ran node app name 2 app server js this node process will continue to run   If you decide you want to kill them all you can use killall node as others have mentioned

User · Answer

My use case  on MacOS  run rerun multiple node servers on different ports from a script  run   cd  PATH1  amp  amp  node server1 js  amp  cd  PATH2  amp  amp  node server2 js  amp        stop1   kill -9   lsof -nP -i4TCP  PORT1   grep LISTEN   awk   print  2      stop2  stop3     rerun   stop1  amp  stop2  amp       amp  stopN   run  for more info about finding a process by a port  Who is listening on a given TCP port on Mac OS X

User · Answer

For windows first search the PID with your port number  netstat -ano   findStr  portNumber    After that  kill the task  make sure you are in root of your  c  drive  And the command will be taskkill  F  PID your pid

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If you want to stop your server with npm stop or something like this  You can write the code that kill your server process as    require  child process   exec  kill -9   pid      Check this link for the detail   https   gist github com dominhhai aa7f3314ad27e2c50fd5

User · Answer

You can use fuser to get what you want to be done   In order to obtain the process ids of the tasks running on a port you can do   fuser  lt  lt target port gt  gt  tcp   Let s say the port is 8888  the command becomes   fuser 8888 tcp   And to kill a process that is running on a port  simply add -k switch   fuser  lt  lt target port gt  gt  tcp -k   Example  port is 8888    fuser 8888 tcp -k   That s it  It will close the process listening on the port  I usually do this before running my server application

User · Answer

Or alternatively you can do all of these in one line   kill -9   ps aux   grep   snode s    awk   print  2      You can replace node inside   snode s  with any other process name

User · Answer

on linux try  pkill node  on windows   Taskkill  IM node exe  F   or  from subprocess import call  call   taskkill     IM    node exe     F

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I m adding this answer because for many projects with production deployments  we have scripts that stop these processes so we don t have to   A clean way to manage your Node Server processes is using the forever package  from NPM     Example   Install Forever   npm install forever -g   Run Node Server   forever start -al   logs forever log -ao   logs out log -ae   logs err log server js   Result    info     Forever processing file  server js   Shutdown Node Server   forever stop server js   Result   info     Forever stopped process      uid  command                            script                           forever pid   id logfile                           uptime  0  sBSj   usr bin nodejs node    path to your project server js 23084   13176       forever forever log 0 0 0 0 247   This will cleanly shutdown your Server application

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Ctrl Z suspends it  which means it can still be running   Ctrl C will actually kill it   you can also kill it manually like this   ps aux   grep node   Find the process ID  second from the left    kill -9 PROCESS ID   This may also work  killall node

[node.js] Stop node.js program from command line

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