Find-process NPM

find-process

With find-process, you can:

find the process which is listening specified port
find the process by pid
find the process by given name or name pattern

We have covered the difference of main OS platform, including Mac OSX, Linux, Windows and Android (with Termux).

CLI

Install find-process as a CLI tool:

$ npm install find-process -g

Usage:

  Usage: find-process [options] <keyword>


  Options:

    -V, --version      output the version number
    -t, --type <type>  find process by keyword type (pid|port|name)
    -p, --port         find process by port
    -h, --help         output usage information

  Examples:

    $ find-process node          # find by name "node"
    $ find-process 111           # find by pid "111"
    $ find-process -p 80         # find by port "80"
    $ find-process -t port 80    # find by port "80"

Example:

Node API

You can use npm to install:

$ npm install find-process --save

Usage:

const find = require('find-process');

find('pid', 12345)
  .then(function (list) {
    console.log(list);
  }, function (err) {
    console.log(err.stack || err);
  })

Synopsis

Promise<Array> find(type, value, [options])

Arguments

type the type of find, support: port|pid|name
value the value of type, can be RegExp if type is name
options this can either be the object described below or boolean to just set strict mode
- options.strict the optional strict mode is for checking port, pid, or name exactly matches the given one. (on Windows, .exe can be omitted)
- options.logLevel set the logging level to trace|debug|info|warn|error. In practice this lets you silence a netstat warning on Linux.

Return

The return value of find-process is Promise, if you use co you can use yield find(type, value) directly.

The resolved value of promise is an array list of process ([] means it may be missing on some platforms):

[{
  pid: <process id>,
  ppid: [parent process id],
  uid: [user id (for *nix)],
  gid: [user group id (for *nix)],
  name: <command/process name>,
  bin: <execute path (for *nix)>,
  cmd: <full command with args>
}, ...]

Example

Find process which is listening port 80.

const find = require('find-process');

find('port', 80)
  .then(function (list) {
    if (!list.length) {
      console.log('port 80 is free now');
    } else {
      console.log('%s is listening port 80', list[0].name);
    }
  })

Find process by pid.

const find = require('find-process');

find('pid', 12345)
  .then(function (list) {
    console.log(list);
  }, function (err) {
    console.log(err.stack || err);
  });

Find all nginx process.

const find = require('find-process');

find('name', 'nginx', true)
  .then(function (list) {
    console.log('there are %s nginx process(es)', list.length);
  });

Find all nginx processes on Linux without logging a warning when run as a user who isn't root.

const find = require('find-process');

find('name', 'nginx', {strict: true, logLevel: 'error'})
  .then(function (list) {
    console.log('there are %s nginx process(es)', list.length);
  });