Initial commit

.gitignore

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+vendor/
+composer.lock
+.DS_Store
+.php_cs.cache

CHANGELOG.md

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+# Change Log
+
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+**View all [Unreleased][] changes here**
+
+## 1.0.0
+#### Added
+-   Initial release
+
+[Unreleased]: https://github.com/pointybeard/helpers-functions-cli/compare/1.0.0...integration

CONTRIBUTING.md

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+# Contributing to this project
+
+We encourage contribution to this project and only ask you follow some simple rules to make everyone's job a little easier.
+
+## Found a bug?
+
+Please lodge an issue at the GitHub issue tracker for this project -- [https://github.com/pointybeard/helpers-functions-cli/issues](https://github.com/pointybeard/helpers-functions-cli/issues)
+
+Include details on the behaviour you are seeing, and steps needed to reproduce the problem.
+
+## Want to contribute code?
+
+*   Fork the project
+*   Make your feature addition or bug fix
+*   Ensure your code is nicely formatted
+*   Commit just the modifications, do not alter CHANGELOG.md. If relevant, link to GitHub issue (see [https://help.github.com/articles/closing-issues-via-commit-messages/](https://help.github.com/articles/closing-issues-via-commit-messages/))
+*   Send the pull request
+
+We will review the code and either merge it in, or leave some feedback.

LICENCE

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+All source code included in the "PHP Helpers: Command-line Functions" archive is,
+unless otherwise specified, released under the MIT licence as follows:
+
+----- begin license block -----
+
+Copyright 2019 Alannah Kearney
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+----- end license block -----

README.md

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+# PHP Helpers: Command-line Functions
+
+-   Version: v1.0.0
+-   Date: May 08 2019
+-   [Release notes](https://github.com/pointybeard/helpers-functions-cli/blob/master/CHANGELOG.md)
+-   [GitHub repository](https://github.com/pointybeard/helpers-functions-cli)
+
+A collection of functions relating to the command-line
+
+## Installation
+
+This library is installed via [Composer](http://getcomposer.org/). To install, use `composer require pointybeard/helpers-functions-cli` or add `"pointybeard/helpers-functions-cli": "~1.0"` to your `composer.json` file.
+
+And run composer to update your dependencies:
+
+    $ curl -s http://getcomposer.org/installer | php
+    $ php composer.phar update
+
+### Requirements
+
+There are no particuar requirements for this library other than PHP 5.6 or greater.
+
+To include all the [PHP Helpers](https://github.com/pointybeard/helpers) packages on your project, use `composer require pointybeard/helpers` or add `"pointybeard/helpers": "~1.0"` to your composer file.
+
+## Usage
+
+This library is a collection convenience function for common tasks relating to bitwise flags. They are included by the vendor autoloader automatically. The functions have a namespace of `pointybeard\Helpers\Functions\Cli`
+
+The following functions are provided:
+
+-   `can_invoke_bash() : bool`
+-   `is_su() : bool`
+
+Example usage:
+
+```php
+<?php
+
+include __DIR__ . '/vendor/autoload.php';
+
+use pointybeard\Helpers\Functions\Cli;
+
+var_dump(Cli\can_invoke_bash());
+// bool(true)
+
+var_dump(Cli\is_su());
+// bool(false)
+```
+
+## Support
+
+If you believe you have found a bug, please report it using the [GitHub issue tracker](https://github.com/pointybeard/helpers-functions-cli/issues),
+or better yet, fork the library and submit a pull request.
+
+## Contributing
+
+We encourage you to contribute to this project. Please check out the [Contributing documentation](https://github.com/pointybeard/helpers-functions-cli/blob/master/CONTRIBUTING.md) for guidelines about how to get involved.
+
+## License
+
+"PHP Helpers: Command-line Functions" is released under the [MIT License](http://www.opensource.org/licenses/MIT).

composer.json

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+{
+    "name": "pointybeard/helpers-functions-cli",
+    "version": "1.0.0",
+    "description": "A collection of functions relating to the command-line",
+    "homepage": "https://github.com/pointybeard/helpers-functions-cli",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Alannah Kearney",
+            "email": "hi@alannahkearney.com",
+            "homepage": "http://alannahkearney.com",
+            "role": "Developer"
+        }
+    ],
+    "require": {
+        "php": ">=5.6.6"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^5",
+        "block8/php-docblock-checker": "~1.10"
+    },
+    "support": {
+        "issues": "https://github.com/pointybeard/helpers-functions-cli/issues",
+        "wiki": "https://github.com/pointybeard/helpers-functions-cli/wiki"
+    },
+    "minimum-stability": "stable",
+    "autoload": {
+        "files": [
+            "src/Cli/Cli.php"
+        ]
+    }
+}

src/Cli/Cli.php

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+<?php
+
+namespace pointybeard\Helpers\Functions\Cli;
+
+/**
+ * Checks if bash can be invoked.
+ *
+ * Credit to Troels Knak-Nielsen for inspiring this code.
+ * (http://www.sitepoint.com/interactive-cli-password-prompt-in-php/)
+ *
+ * @return bool true if bash can be invoked
+ */
+if (!function_exists(__NAMESPACE__ . 'can_invoke_bash')) {
+    function can_invoke_bash()
+    {
+        return (strcmp(trim(shell_exec("/usr/bin/env bash -c 'echo OK'")), 'OK') === 0);
+    }
+}
+
+/**
+ * Checks if script is running as root user
+ *
+ * @return bool true if user is root
+ */
+if (!function_exists(__NAMESPACE__ . 'is_su')) {
+    function is_su()
+    {
+        $userinfo = posix_getpwuid(posix_geteuid());
+        return (bool)($userinfo['uid'] == 0 || $userinfo['name'] == 'root');
+    }
+}