composer-php 在Ubuntu上安装Composer
示例
在下载和安装Composer之前，我们需要确保服务器已安装所有依赖项。
首先，通过运行以下命令更新程序包管理器缓存：
sudo apt-get update
现在，让我们安装依赖项。我们将需要curl下载Composer并php5-cli进行安装和运行。git由Composer用于下载项目依赖项。可以使用以下命令安装所有内容：
sudo apt-get install curl php5-cli git
现在让我们安装它：
curl -sS https://getcomposer.org/installer | sudo php -- --install-dir=/usr/local/bin --filename=composer
这将在/usr/local/bin下作为名为composer的系统级命令下载并安装Composer。输出应如下所示：
Output #!/usr/bin/env php All settings correct for using Composer Downloading... Composer successfully installed to: /usr/local/bin/composer Use it: php /usr/local/bin/composer
要测试您的安装，请运行：
composer
并且您应该获得类似于以下的输出：
Output
______
/ ____/___ ____ ___ ____ ____ ________ _____
/ / / __ \/ __ `__ \/ __ \/ __ \/ ___/ _ \/ ___/
/ /___/ /_/ / / / / / / /_/ / /_/ (__ ) __/ /
\____/\____/_/ /_/ /_/ .___/\____/____/\___/_/
/_/
Composer version 1.0-dev (9859859f1082d94e546aa75746867df127aa0d9e) 2015-08-17 14:57:00
Usage:
command [options] [arguments]
Options:
--help (-h) Display this help message
--quiet (-q) Do not output any message
--verbose (-v|vv|vvv) Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug
--version (-V) Display this application version
--ansi Force ANSI output
--no-ansi Disable ANSI output
--no-interaction (-n) Do not ask any interactive question
--profile Display timing and memory usage information
--working-dir (-d) If specified, use the given directory as working directory.
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