How to install Composer on Debian / Ubuntu Linux

How to install Composer on Debian / Ubuntu Linux

Installation

#apt-get install curl php5-cli git

OR

#apt install curl php7.0-cli git

Install composer tool

Next install composer on Debian or Ubuntu Linux in /usr/local/bin/ directory as follows:

# curl -sS https://getcomposer.org/installer | sudo php -- --install-dir=/usr/local/bin --filename=composer

Verify composer

To verify installation type:
# composer

OR

# /usr/local/bin/composer

Sample output

composer

Do not run Composer as root/super user! See https://getcomposer.org/root for details

   ______

  / ____/___  ____ ___  ____  ____  ________  _____

 / /   / __ \/ __ `__ \/ __ \/ __ \/ ___/ _ \/ ___/

/ /___/ /_/ / / / / / / /_/ / /_/ (__  )  __/ /

\____/\____/_/ /_/ /_/ .___/\____/____/\___/_/

                    /_/

Composer version 1.2.1 2016-09-12 11:27:19

Usage:

  command [options] [arguments]

Options:

  -h, --help                     Display this help message

  -q, --quiet                    Do not output any message

  -V, --version                  Display this application version

      --ansi                     Force ANSI output

      --no-ansi                  Disable ANSI output

  -n, --no-interaction           Do not ask any interactive question

      --profile                  Display timing and memory usage information

      --no-plugins               Whether to disable plugins.

  -d, --working-dir=WORKING-DIR  If specified, use the given directory as working directory.

  -v|vv|vvv, --verbose           Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

Available commands:

  about           Short information about Composer

  archive         Create an archive of this composer package

  browse          Opens the package's repository URL or homepage in your browser.

  clear-cache     Clears composer's internal package cache.

  clearcache      Clears composer's internal package cache.

  config          Set config options

  create-project  Create new project from a package into given directory.

  depends         Shows which packages cause the given package to be installed

  diagnose        Diagnoses the system to identify common errors.

  dump-autoload   Dumps the autoloader

  dumpautoload    Dumps the autoloader

  exec            Execute a vendored binary/script

  global          Allows running commands in the global composer dir ($COMPOSER_HOME).

  help            Displays help for a command

  home            Opens the package's repository URL or homepage in your browser.

  info            Show information about packages

  init            Creates a basic composer.json file in current directory.