190 lines
5.9 KiB
Markdown
190 lines
5.9 KiB
Markdown
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<h1 align="center">
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<b>pidtree</b>
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</h1>
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<p align="center">
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<!-- CI - TravisCI -->
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<a href="https://travis-ci.org/simonepri/pidtree">
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<img src="https://img.shields.io/travis/simonepri/pidtree/master.svg?label=MacOS%20%26%20Linux" alt="Mac/Linux Build Status" />
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</a>
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<!-- CI - AppVeyor -->
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<a href="https://ci.appveyor.com/project/simonepri/pidtree">
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<img src="https://img.shields.io/appveyor/ci/simonepri/pidtree/master.svg?label=Windows" alt="Windows Build status" />
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</a>
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<!-- Coverage - Codecov -->
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<a href="https://codecov.io/gh/simonepri/pidtree">
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<img src="https://img.shields.io/codecov/c/github/simonepri/pidtree/master.svg" alt="Codecov Coverage report" />
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</a>
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<!-- DM - Snyk -->
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<a href="https://snyk.io/test/github/simonepri/pidtree?targetFile=package.json">
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<img src="https://snyk.io/test/github/simonepri/pidtree/badge.svg?targetFile=package.json" alt="Known Vulnerabilities" />
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</a>
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<!-- DM - David -->
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<a href="https://david-dm.org/simonepri/pidtree">
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<img src="https://david-dm.org/simonepri/pidtree/status.svg" alt="Dependency Status" />
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</a>
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<br/>
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<!-- Code Style - XO-Prettier -->
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<a href="https://github.com/xojs/xo">
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<img src="https://img.shields.io/badge/code_style-XO+Prettier-5ed9c7.svg" alt="XO Code Style used" />
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</a>
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<!-- Test Runner - AVA -->
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<a href="https://github.com/avajs/ava">
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<img src="https://img.shields.io/badge/test_runner-AVA-fb3170.svg" alt="AVA Test Runner used" />
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</a>
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<!-- Test Coverage - Istanbul -->
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<a href="https://github.com/istanbuljs/nyc">
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<img src="https://img.shields.io/badge/test_coverage-NYC-fec606.svg" alt="Istanbul Test Coverage used" />
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</a>
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<!-- Init - ni -->
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<a href="https://github.com/simonepri/ni">
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<img src="https://img.shields.io/badge/initialized_with-ni-e74c3c.svg" alt="NI Scaffolding System used" />
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</a>
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<!-- Release - np -->
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<a href="https://github.com/sindresorhus/np">
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<img src="https://img.shields.io/badge/released_with-np-6c8784.svg" alt="NP Release System used" />
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</a>
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<br/>
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<!-- Version - npm -->
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<a href="https://www.npmjs.com/package/pidtree">
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<img src="https://img.shields.io/npm/v/pidtree.svg" alt="Latest version on npm" />
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</a>
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<!-- License - MIT -->
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<a href="https://github.com/simonepri/pidtree/tree/master/license">
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<img src="https://img.shields.io/github/license/simonepri/pidtree.svg" alt="Project license" />
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</a>
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</p>
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<p align="center">
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🚸 Cross platform children list of a PID.
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<br/>
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<sub>
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Coded with ❤️ by <a href="#authors">Simone Primarosa</a>.
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</sub>
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</p>
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## Synopsis
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This package is really similar to [ps-tree][gh:ps-tree] but is faster, safer and
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provides sub-children results.
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Furthermore ps-tree is [unmaintained][gh:ps-tree-um].
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Uuh, and a fancy [CLI](#cli) is also available!
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## Usage
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```js
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var pidtree = require('pidtree')
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// Get childs of current process
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pidtree(process.pid, function (err, pids) {
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console.log(pids)
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// => []
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})
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// Include the given pid in the result array
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pidtree(process.pid, {root: true}, function (err, pids) {
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console.log(pids)
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// => [727]
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})
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// Get all the processes of the System (-1 is a special value of this package)
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pidtree(-1, function (err, pids) {
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console.log(pids)
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// => [530, 42, ..., 41241]
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})
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// Include PPID in the results
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pidtree(1, {advanced: true}, function (err, pids) {
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console.log(pids)
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// => [{ppid: 1, pid: 530}, {ppid: 1, pid: 42}, ..., {ppid: 1, pid: 41241}]
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})
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// If no callback is given it returns a promise instead
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const pids = await pidtree(1)
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console.log(pids)
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// => [141, 42, ..., 15242]
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```
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## Compatibility
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| Linux | FreeBSD | NetBSD | SunOS | macOS | Win | AIX |
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| --- | --- | --- | --- | --- | --- | --- |
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| ✅ | ❓ | ❓ | ❓ | ✅ | ✅ | ❓ |
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✅ = Working
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❓ = Not tested but should work
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Please if your platform is not supported [file an issue][new issue].
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## CLI
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<img src="https://github.com/simonepri/pidtree/raw/refactor/media/cli.gif" alt="pidtree cli" width="300" align="right"/>
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Show a tree of the processes inside your system inside your terminal.
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```bash
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npx pidtree $PPID
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```
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Just replace `$PPID` with one of the pids inside your system.
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Or don't pass anything if you want all the pids inside your system.
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```bash
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npx pidtree
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```
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To display the output as a list, similar to the one produced from `pgrep -P $PID`,
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pass the `--list` flag.
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```bash
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npx pidtree --list
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```
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## API
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<a name="pidtree"></a>
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## pidtree(pid, [options], [callback]) ⇒ <code>[Promise.<Array.<Object>>]</code>
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Get the list of children pids of the given pid.
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**Kind**: global function
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**Returns**: <code>Promise.<Array.<Object>></code> - Only when the callback is not provided.
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**Access**: public
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| Param | Type | Default | Description |
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| --- | --- | --- | --- |
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| pid | <code>Number</code> \| <code>String</code> | | A pid. If -1 will return all the pids. |
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| [options] | <code>Object</code> | | Optional options object. |
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| [options.root] | <code>Boolean</code> | <code>false</code> | Include the provided pid in the list. Ignored if -1 is passed as pid. |
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| [callback] | <code>function</code> | | Called when the list is ready. If not provided a promise is returned instead. |
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## Related
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- [pidusage][gh:pidusage] -
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Cross-platform process cpu % and memory usage of a PID
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## Authors
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- **Simone Primarosa** - [simonepri][github:simonepri]
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See also the list of [contributors][contributors] who participated in this project.
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## License
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This project is licensed under the MIT License - see the [license][license] file for details.
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<!-- Links -->
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[new issue]: https://github.com/simonepri/pidtree/issues/new
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[license]: https://github.com/simonepri/pidtree/tree/master/license
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[contributors]: https://github.com/simonepri/pidtree/contributors
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[github:simonepri]: https://github.com/simonepri
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[gh:pidusage]: https://github.com/soyuka/pidusage
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[gh:ps-tree]: https://github.com/indexzero/ps-tree
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[gh:ps-tree-um]: https://github.com/indexzero/ps-tree/issues/30
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