In this tutorial, we will show you how to install Composer on Debian 9. For those of you who didn’t know, Composer is an incredible dependency manager tool used to install and upgrade libraries for dynamic, PHP applications and projects. This software used to facilitate the installation and update of the project dependencies which also show the appropriate versions required for the project requirements.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation Composer on a Debian 9 (Stretch) server.
Install Composer on Debian 9 Stretch
Step 1. Before we install any software, it’s important to make sure your system is up to date by running these following apt-get commands in the terminal:
1 2 3 | sudoaptupdate sudoaptupgrade sudoaptinstallcurlphp-cliphp-mbstringgitunzip |
Enter following commands to download Composer Setup:
1 2 | cd~ curl-sShttps://getcomposer.org/installer -o composer-setup.php |
You should verify that the installer matches the SHA-384 hash for the data integrity of the latest installer found on the Composer Public Keys or Signatures page by running the following command:
1 | HASH="$(wget -q -O - https://composer.github.io/installer.sig)" |
Check if the installation script is corrupted:
1 | php-r"if (hash_file('SHA384', 'composer-setup.php') === '$HASH') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;" |
Now run following command to install Composer globally inside /usr/local/bin directory:
1 | sudophpcomposer-setup.php--install-dir=/usr/local/bin--filename=composer |
Then, run the following command to confirm the installation:
1 | composer |
Output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | ______ /____/___ _______ ____ ____ ________ _____ // /__\/__`__\/__\/__\/___/_\/___/ //___//_////////_///_/(__ ) __// \____/\____/_//_//_/.___/\____/____/\___/_/ /_/ Composer1.6.32019-02-1216:46:18 Usage: command[options][arguments] Options: -h,--help Displaythishelpmessage -q,--quiet Donotoutputanymessage -V,--version Displaythisapplicationversion --ansi ForceANSIoutput --no-ansi DisableANSIoutput -n,--no-interaction Donotaskanyinteractivequestion --profile Displaytimingandmemoryusageinformation --no-plugins Whethertodisableplugins. -d,--working-dir=WORKING-DIR Ifspecified,usethegivendirectoryasworkingdirectory. -v|vv|vvv,--verbose Increasetheverbosityofmessages:1fornormaloutput,2formoreverboseoutputand3fordebug |
Congratulations! You have successfully installed Composer. Thanks for using this tutorial for installing Composer on Debian 9 Stretch system. For additional help or useful information, we recommend you to check the official Composer web site.
