How to Solve Laravel Error Message mkdir Permission Denied on Creating a Laravel Project

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This is another article which is discussing an error happened at the time for creating a Laravel web-application project. Specifically, this article is describing on how to solve Laravel error message with the specific error message of mkdir():Permission Denied as soon as the command for creating a new Laravel web-based application project is executed. The error message is shown below in detail :

user@hostname:/var/www/html$ composer create-project --prefer-dist laravel/laravel app
Installing laravel/laravel (v5.5.0)

[ErrorException]
mkdir(): Permission denied

create-project [-s|--stability STABILITY] [--prefer-source] [--prefer-dist] [--repository REPOSITORY] [--repository-url REPOSITORY-URL] [--dev] [--no-dev] [--no-custom-installers] [--no-scripts] [--no-progress] [--no-secure-http] [--keep-vcs] [--no-install] [--ignore-platform-reqs] [--] [] [] []

user@hostname:/var/www/html$

Since the error relates with the failure of creating folder called app for the new created Laravel web-based application below are steps which taken to solve the above problem specifying the laravel error message :

  1. Change the error into root whom the user itself is a super user and the user itself normally has the permission to write in ‘/var/www/html’. But at the moment the above command executed as root, below it is actually happened :
root@hostname:/var/www/html# composer create-project --prefer-dist laravel/laravel laravel
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Installing laravel/laravel (v5.5.0)
- Installing laravel/laravel (v5.5.0): Loading from cache
Created project in laravel
> @php -r "file_exists('.env') || copy('.env.example', '.env');"
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 68 installs, 0 updates, 0 removals
- Installing vlucas/phpdotenv (v2.4.0): Loading from cache
- Installing symfony/css-selector (v3.3.8): Loading from cache
- Installing tijsverkoyen/css-to-inline-styles (2.2.0): Loading from cache
- Installing symfony/polyfill-mbstring (v1.5.0): Loading from cache
- Installing symfony/var-dumper (v3.3.8): Loading from cache
- Installing symfony/routing (v3.3.8): Loading from cache
- Installing symfony/process (v3.3.8): Loading from cache
- Installing symfony/http-foundation (v3.3.8): Loading from cache
- Installing symfony/event-dispatcher (v3.3.8): Loading from cache
- Installing psr/log (1.0.2): Loading from cache
- Installing symfony/debug (v3.3.8): Loading from cache
- Installing symfony/http-kernel (v3.3.8): Loading from cache
- Installing symfony/finder (v3.3.8): Loading from cache
  - Installing symfony/console (v3.3.8): Loading from cache
  - Installing doctrine/lexer (v1.0.1): Loading from cache
  - Installing egulias/email-validator (2.1.2): Loading from cache
  - Installing swiftmailer/swiftmailer (v6.0.1): Loading from cache
  - Installing paragonie/random_compat (v2.0.10): Loading from cache
  - Installing ramsey/uuid (3.7.0): Loading from cache
  - Installing psr/simple-cache (1.0.0): Loading from cache
  - Installing psr/container (1.0.0): Loading from cache
  - Installing symfony/translation (v3.3.8): Loading from cache
  - Installing nesbot/carbon (1.22.1): Loading from cache
  - Installing mtdowling/cron-expression (v1.2.0): Loading from cache
  - Installing monolog/monolog (1.23.0): Loading from cache
  - Installing league/flysystem (1.0.41): Loading from cache
  - Installing erusev/parsedown (1.6.3): Loading from cache
  - Installing doctrine/inflector (v1.2.0): Loading from cache
  - Installing laravel/framework (v5.5.3): Loading from cache
  - Installing fideloper/proxy (3.3.4): Loading from cache
  - Installing jakub-onderka/php-console-color (0.1): Loading from cache
  - Installing jakub-onderka/php-console-highlighter (v0.3.2): Loading from cache
  - Installing dnoegel/php-xdg-base-dir (0.1): Loading from cache
  - Installing nikic/php-parser (v3.1.1): Loading from cache
  - Installing psy/psysh (v0.8.11): Loading from cache
  - Installing laravel/tinker (v1.0.2): Loading from cache
  - Installing filp/whoops (2.1.10): Loading from cache
  - Installing fzaninotto/faker (v1.7.1): Loading from cache
  - Installing hamcrest/hamcrest-php (v1.2.2): Loading from cache
  - Installing mockery/mockery (0.9.9): Loading from cache
  - Installing sebastian/version (2.0.1): Loading from cache
  - Installing sebastian/resource-operations (1.0.0): Loading from cache
  - Installing sebastian/recursion-context (3.0.0): Loading from cache
  - Installing sebastian/object-reflector (1.1.1): Loading from cache
  - Installing sebastian/object-enumerator (3.0.3): Loading from cache
  - Installing sebastian/global-state (2.0.0): Loading from cache
  - Installing sebastian/exporter (3.1.0): Loading from cache
  - Installing sebastian/environment (3.1.0): Loading from cache
  - Installing sebastian/diff (2.0.1): Loading from cache
  - Installing sebastian/comparator (2.0.2): Loading from cache
  - Installing doctrine/instantiator (1.0.5): Loading from cache
  - Installing phpunit/php-text-template (1.2.1): Loading from cache
  - Installing phpunit/phpunit-mock-objects (4.0.4): Loading from cache
  - Installing phpunit/php-timer (1.0.9): Loading from cache
  - Installing phpunit/php-file-iterator (1.4.2): Loading from cache
  - Installing theseer/tokenizer (1.1.0): Loading from cache
  - Installing sebastian/code-unit-reverse-lookup (1.0.1): Loading from cache
  - Installing phpunit/php-token-stream (2.0.1): Loading from cache
  - Installing phpunit/php-code-coverage (5.2.2): Loading from cache
  - Installing webmozart/assert (1.2.0): Loading from cache
  - Installing phpdocumentor/reflection-common (1.0): Loading from cache
  - Installing phpdocumentor/type-resolver (0.4.0): Loading from cache
  - Installing phpdocumentor/reflection-docblock (4.1.1): Loading from cache
  - Installing phpspec/prophecy (v1.7.2): Loading from cache
  - Installing phar-io/version (1.0.1): Loading from cache
  - Installing phar-io/manifest (1.0.1): Loading from cache
  - Installing myclabs/deep-copy (1.6.1): Loading from cache
  - Installing phpunit/phpunit (6.3.0): Loading from cache
symfony/var-dumper suggests installing ext-symfony_debug ()
symfony/routing suggests installing doctrine/annotations (For using the annotation loader)
symfony/routing suggests installing symfony/config (For using the all-in-one router or any loader)
symfony/routing suggests installing symfony/dependency-injection (For loading routes from a service)
symfony/routing suggests installing symfony/expression-language (For using expression matching)
symfony/routing suggests installing symfony/yaml (For using the YAML loader)
symfony/event-dispatcher suggests installing symfony/dependency-injection ()
symfony/http-kernel suggests installing symfony/browser-kit ()
symfony/http-kernel suggests installing symfony/class-loader ()
symfony/http-kernel suggests installing symfony/config ()
symfony/http-kernel suggests installing symfony/dependency-injection ()
symfony/console suggests installing symfony/filesystem ()
paragonie/random_compat suggests installing ext-libsodium (Provides a modern crypto API that can be used to generate random bytes.)
ramsey/uuid suggests installing ircmaxell/random-lib (Provides RandomLib for use with the RandomLibAdapter)
ramsey/uuid suggests installing ext-libsodium (Provides the PECL libsodium extension for use with the SodiumRandomGenerator)
ramsey/uuid suggests installing ext-uuid (Provides the PECL UUID extension for use with the PeclUuidTimeGenerator and PeclUuidRandomGenerator)
ramsey/uuid suggests installing moontoast/math (Provides support for converting UUID to 128-bit integer (in string form).)
ramsey/uuid suggests installing ramsey/uuid-doctrine (Allows the use of Ramsey\Uuid\Uuid as Doctrine field type.)
ramsey/uuid suggests installing ramsey/uuid-console (A console application for generating UUIDs with ramsey/uuid)
symfony/translation suggests installing symfony/config ()
symfony/translation suggests installing symfony/yaml ()
monolog/monolog suggests installing aws/aws-sdk-php (Allow sending log messages to AWS services like DynamoDB)
monolog/monolog suggests installing doctrine/couchdb (Allow sending log messages to a CouchDB server)
monolog/monolog suggests installing ext-amqp (Allow sending log messages to an AMQP server (1.0+ required))
monolog/monolog suggests installing ext-mongo (Allow sending log messages to a MongoDB server)
monolog/monolog suggests installing graylog2/gelf-php (Allow sending log messages to a GrayLog2 server)
monolog/monolog suggests installing mongodb/mongodb (Allow sending log messages to a MongoDB server via PHP Driver)
monolog/monolog suggests installing php-amqplib/php-amqplib (Allow sending log messages to an AMQP server using php-amqplib)
monolog/monolog suggests installing php-console/php-console (Allow sending log messages to Google Chrome)
monolog/monolog suggests installing rollbar/rollbar (Allow sending log messages to Rollbar)
monolog/monolog suggests installing ruflin/elastica (Allow sending log messages to an Elastic Search server)
monolog/monolog suggests installing sentry/sentry (Allow sending log messages to a Sentry server)
league/flysystem suggests installing league/flysystem-aws-s3-v2 (Allows you to use S3 storage with AWS SDK v2)
league/flysystem suggests installing league/flysystem-aws-s3-v3 (Allows you to use S3 storage with AWS SDK v3)
league/flysystem suggests installing league/flysystem-azure (Allows you to use Windows Azure Blob storage)
league/flysystem suggests installing league/flysystem-cached-adapter (Flysystem adapter decorator for metadata caching)
league/flysystem suggests installing league/flysystem-eventable-filesystem (Allows you to use EventableFilesystem)
league/flysystem suggests installing league/flysystem-rackspace (Allows you to use Rackspace Cloud Files)
league/flysystem suggests installing league/flysystem-sftp (Allows you to use SFTP server storage via phpseclib)
league/flysystem suggests installing league/flysystem-webdav (Allows you to use WebDAV storage)
league/flysystem suggests installing league/flysystem-ziparchive (Allows you to use ZipArchive adapter)
league/flysystem suggests installing spatie/flysystem-dropbox (Allows you to use Dropbox storage)
league/flysystem suggests installing srmklive/flysystem-dropbox-v2 (Allows you to use Dropbox storage for PHP 5 applications)
laravel/framework suggests installing aws/aws-sdk-php (Required to use the SQS queue driver and SES mail driver (~3.0).)
laravel/framework suggests installing doctrine/dbal (Required to rename columns and drop SQLite columns (~2.5).)
laravel/framework suggests installing guzzlehttp/guzzle (Required to use the Mailgun and Mandrill mail drivers and the ping methods on schedules (~6.0).)
laravel/framework suggests installing league/flysystem-aws-s3-v3 (Required to use the Flysystem S3 driver (~1.0).)
laravel/framework suggests installing league/flysystem-rackspace (Required to use the Flysystem Rackspace driver (~1.0).)
laravel/framework suggests installing nexmo/client (Required to use the Nexmo transport (~1.0).)
laravel/framework suggests installing pda/pheanstalk (Required to use the beanstalk queue driver (~3.0).)
laravel/framework suggests installing predis/predis (Required to use the redis cache and queue drivers (~1.0).)
laravel/framework suggests installing pusher/pusher-php-server (Required to use the Pusher broadcast driver (~2.0).)
laravel/framework suggests installing symfony/dom-crawler (Required to use most of the crawler integration testing tools (~3.3).)
laravel/framework suggests installing symfony/psr-http-message-bridge (Required to psr7 bridging features (~1.0).)
psy/psysh suggests installing ext-pdo-sqlite (The doc command requires SQLite to work.)
psy/psysh suggests installing hoa/console (A pure PHP readline implementation. You'll want this if your PHP install doesn't already support readline or libedit.)
filp/whoops suggests installing whoops/soap (Formats errors as SOAP responses)
sebastian/global-state suggests installing ext-uopz (*)
phpunit/php-code-coverage suggests installing ext-xdebug (^2.5.5)
phpunit/phpunit suggests installing phpunit/php-invoker (^1.1)
phpunit/phpunit suggests installing ext-xdebug (*)
Writing lock file
Generating autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover
Discovered Package: fideloper/proxy
Discovered Package: laravel/tinker
Package manifest generated successfully.
> @php artisan key:generate
Application key [base64:1RfxZT785MHjMkAsIouOaukQHk77Ov+/0Y95EfHmhA8=] set successfully.
You have new mail in /var/mail/root
root@hostname:/var/www/html# 

2. Based on the command executed above, there is a warning presented as follow :

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

Another way to solve the problem instead of using ‘root’ user account is by changing the permission of the folder where the command is being executed. It can be done by typing the following command :

root@hostname:/var/www# chown -Rv www-data.user html/
...
...
ownership of 'html/' retained as www-data:user
root@hostname:/var/www# 

After finishing on changing the permission, just re-execute the above command for creating a new Laravel web-based application project.

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