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:

1$ npm install find-process -g

Usage:

1
2  Usage: find-process [options] <keyword>
3
4
5  Options:
6
7    -V, --version      output the version number
8    -t, --type <type>  find process by keyword type (pid|port|name)
9    -p, --port         find process by port
10    -h, --help         output usage information
11
12  Examples:
13
14    $ find-process node          # find by name "node"
15    $ find-process 111           # find by pid "111"
16    $ find-process -p 80         # find by port "80"
17    $ find-process -t port 80    # find by port "80"
18

Example:

Node API

You can use npm to install:

1$ npm install find-process --save

Usage:

1const find = require('find-process');
2
3find('pid', 12345)
4  .then(function (list) {
5    console.log(list);
6  }, function (err) {
7    console.log(err.stack || err);
8  })

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.

1const find = require('find-process');
2
3find('port', 80)
4  .then(function (list) {
5    if (!list.length) {
6      console.log('port 80 is free now');
7    } else {
8      console.log('%s is listening port 80', list[0].name);
9    }
10  })

Find process by pid.

1const find = require('find-process');
2
3find('pid', 12345)
4  .then(function (list) {
5    console.log(list);
6  }, function (err) {
7    console.log(err.stack || err);
8  });

Find all nginx process.

1const find = require('find-process');
2
3find('name', 'nginx', true)
4  .then(function (list) {
5    console.log('there are %s nginx process(es)', list.length);
6  });

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

1const find = require('find-process');
2
3find('name', 'nginx', {strict: true, logLevel: 'error'})
4  .then(function (list) {
5    console.log('there are %s nginx process(es)', list.length);
6  });

Contributing

We're welcome to receive Pull Request of bugfix or new feature, but please check the list before sending PR:

• Coding Style Please follow the Standard Style
• Documentation Add documentation for every API change
• Unit test Please add unit test for bugfix or new feature

License

MIT