This is an article where the main content is showing how to install a composer tool in Linux Ubuntu 19.10 operating system. What is a composer tool actually ?. According to the information exist in this link, it is a tool for dependency management in PHP. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you. So, it is very important upon developing a system or an application powered by PHP programming language. The following is the installation step for Composer in a Linux Ubuntu 19.10 operating system :
1. First of all, switch to ‘root’ or ‘admin’ user account. In order to switch user account, there is a utility called ‘sudo’ in Linux Ubuntu. So, execute the ‘sudo’ command for switching to ‘root’ or ‘admin’ user account as follows :
user@hostname:~$ sudo su - [sudo] password for user: root@hostname:~#
2. Next, just execute a command for installing composer. Execute the command in the command line interface as follows :
root@hostname:/var/www/html# apt -y install composer Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: jsonlint php-composer-ca-bundle php-composer-semver php-composer-spdx-licenses php-composer-xdebug-handler php-json-schema php-psr-container php-psr-log php-symfony-console php-symfony-filesystem php-symfony-finder php-symfony-process php-symfony-service-contracts Suggested packages: fossil mercurial subversion php-symfony-event-dispatcher php-symfony-lock php-symfony-service-implementation The following NEW packages will be installed: composer jsonlint php-composer-ca-bundle php-composer-semver php-composer-spdx-licenses php-composer-xdebug-handler php-json-schema php-psr-container php-psr-log php-symfony-console php-symfony-filesystem php-symfony-finder php-symfony-process php-symfony-service-contracts 0 upgraded, 14 newly installed, 0 to remove and 0 not upgraded. Need to get 569 kB of archives. After this operation, 3.379 kB of additional disk space will be used. Get:1 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-composer-ca-bundle all 1.2.3-1 [9.336 B] Get:2 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-composer-semver all 1.5.0-2 [10,9 kB] Get:3 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-composer-spdx-licenses all 1.5.2-1 [11,2 kB] Get:4 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-psr-log all 1.1.0-1 [8.032 B] Get:5 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-composer-xdebug-handler all 1.3.3-2 [14,2 kB] Get:6 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-json-schema all 5.2.8-1 [32,2 kB] Get:7 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 jsonlint all 1.7.1-1 [11,2 kB] Get:8 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-psr-container all 1.0.0-1 [3.180 B] Get:9 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-symfony-service-contracts all 1.1.6-1 [7.084 B] Get:10 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-symfony-console all 4.3.4+dfsg-1ubuntu1 [71,1 kB] Get:11 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-symfony-filesystem all 4.3.4+dfsg-1ubuntu1 [17,9 kB] Get:12 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-symfony-finder all 4.3.4+dfsg-1ubuntu1 [22,7 kB] Get:13 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 php-symfony-process all 4.3.4+dfsg-1ubuntu1 [27,1 kB] Get:14 http://xxxxxxxxxxxxxxxxxxxxxxxxxxxx eoan/universe amd64 composer all 1.9.0-2 [323 kB] Fetched 569 kB in 4s (160 kB/s) Selecting previously unselected package php-composer-ca-bundle. (Reading database ... 203452 files and directories currently installed.) Preparing to unpack .../00-php-composer-ca-bundle_1.2.3-1_all.deb ... Unpacking php-composer-ca-bundle (1.2.3-1) ... Selecting previously unselected package php-composer-semver. Preparing to unpack .../01-php-composer-semver_1.5.0-2_all.deb ... Unpacking php-composer-semver (1.5.0-2) ... Selecting previously unselected package php-composer-spdx-licenses. Preparing to unpack .../02-php-composer-spdx-licenses_1.5.2-1_all.deb ... Unpacking php-composer-spdx-licenses (1.5.2-1) ... Selecting previously unselected package php-psr-log. Preparing to unpack .../03-php-psr-log_1.1.0-1_all.deb ... Unpacking php-psr-log (1.1.0-1) ... Selecting previously unselected package php-composer-xdebug-handler. Preparing to unpack .../04-php-composer-xdebug-handler_1.3.3-2_all.deb ... Unpacking php-composer-xdebug-handler (1.3.3-2) ... Selecting previously unselected package php-json-schema. Preparing to unpack .../05-php-json-schema_5.2.8-1_all.deb ... Unpacking php-json-schema (5.2.8-1) ... Selecting previously unselected package jsonlint. Preparing to unpack .../06-jsonlint_1.7.1-1_all.deb ... Unpacking jsonlint (1.7.1-1) ... Selecting previously unselected package php-psr-container. Preparing to unpack .../07-php-psr-container_1.0.0-1_all.deb ... Unpacking php-psr-container (1.0.0-1) ... Selecting previously unselected package php-symfony-service-contracts. Preparing to unpack .../08-php-symfony-service-contracts_1.1.6-1_all.deb ... Unpacking php-symfony-service-contracts (1.1.6-1) ... Selecting previously unselected package php-symfony-console. Preparing to unpack .../09-php-symfony-console_4.3.4+dfsg-1ubuntu1_all.deb ... Unpacking php-symfony-console (4.3.4+dfsg-1ubuntu1) ... Selecting previously unselected package php-symfony-filesystem. Preparing to unpack .../10-php-symfony-filesystem_4.3.4+dfsg-1ubuntu1_all.deb ... Unpacking php-symfony-filesystem (4.3.4+dfsg-1ubuntu1) ... Selecting previously unselected package php-symfony-finder. Preparing to unpack .../11-php-symfony-finder_4.3.4+dfsg-1ubuntu1_all.deb ... Unpacking php-symfony-finder (4.3.4+dfsg-1ubuntu1) ... Selecting previously unselected package php-symfony-process. Preparing to unpack .../12-php-symfony-process_4.3.4+dfsg-1ubuntu1_all.deb ... Unpacking php-symfony-process (4.3.4+dfsg-1ubuntu1) ... Selecting previously unselected package composer. Preparing to unpack .../13-composer_1.9.0-2_all.deb ... Unpacking composer (1.9.0-2) ... Setting up php-symfony-finder (4.3.4+dfsg-1ubuntu1) ... Setting up jsonlint (1.7.1-1) ... Setting up php-psr-container (1.0.0-1) ... Setting up php-symfony-service-contracts (1.1.6-1) ... Setting up php-composer-ca-bundle (1.2.3-1) ... Setting up php-symfony-process (4.3.4+dfsg-1ubuntu1) ... Setting up php-symfony-filesystem (4.3.4+dfsg-1ubuntu1) ... Setting up php-psr-log (1.1.0-1) ... Setting up php-composer-semver (1.5.0-2) ... Setting up php-json-schema (5.2.8-1) ... Setting up php-composer-spdx-licenses (1.5.2-1) ... Setting up php-symfony-console (4.3.4+dfsg-1ubuntu1) ... Setting up php-composer-xdebug-handler (1.3.3-2) ... Setting up composer (1.9.0-2) ... Processing triggers for man-db (2.8.7-3) ... root@hostname:/var/www/html#
3. After that, just execute the ‘composer’ command in the command line interface as follows :
root@hostname:~# composer
Do not run Composer as root/super user! See https://getcomposer.org/root for details
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Composer 1.9.0 2019-08-02 20:55:32
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.
--no-cache Prevent use of the cache
-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 Shows the short information about Composer.
archive Creates an archive of this composer package.
browse [home] Opens the package's repository URL or homepage in your browser.
check-platform-reqs Check that platform requirements are satisfied.
clear-cache [clearcache] Clears composer's internal package cache.
config Sets config options.
create-project Creates new project from a package into given directory.
depends [why] Shows which packages cause the given package to be installed.
diagnose Diagnoses the system to identify common errors.
dump-autoload [dumpautoload] Dumps the autoloader.
exec Executes a vendored binary/script.
global Allows running commands in the global composer dir ($COMPOSER_HOME).
help Displays help for a command
init Creates a basic composer.json file in current directory.
install [i] Installs the project dependencies from the composer.lock file if present, or falls back on the composer.json.
licenses Shows information about licenses of dependencies.
list Lists commands
outdated Shows a list of installed packages that have updates available, including their latest version.
prohibits [why-not] Shows which packages prevent the given package from being installed.
remove Removes a package from the require or require-dev.
require Adds required packages to your composer.json and installs them.
run-script [run] Runs the scripts defined in composer.json.
search Searches for packages.
show [info] Shows information about packages.
status Shows a list of locally modified packages, for packages installed from source.
suggests Shows package suggestions.
update [u|upgrade] Upgrades your dependencies to the latest version according to composer.json, and updates the composer.lock file.
validate Validates a composer.json and composer.lock.
root@hostname:~#
As in the above output command execution, there is a message informing to not use ‘root’ account while executing the ‘composer’ command.
4. Following the above command execution, in order to get the version of the composer, just execute the following command :
root@hostname:~# composer --version Do not run Composer as root/super user! See https://getcomposer.org/root for details Composer 1.9.0 2019-08-02 20:55:32 root@hostname:~#
Finally, the ‘composer’ tool is available for further usage in Linux Ubuntu 19.10 operating system.