File Permissions (Cheatsheet for Linux setups)

These are a few notes regarding file permissions on Linux platforms.

A good thread on Drupal file and directory settings is here,
Paths to private files in Drupal 9.

project
    /config
    /web
        /themes
        /sites
        /profiles
        /modules
       PACKAGE_MANAGER_FAILURE.yml // The reason for this page; it was a rabbit hole. 
    /tmp
    /vendor
    /private
-------------
// Optional folders as needed
    /backup
    /scripts
    /log

// Backing the site files
> tar cfz backups/{date}-root.tgz config drush-scripts private_files scripts vendor web 
// Backing the database
sudo cat ../web/sites/default/settings.php
Dump: mysqldump -u dbadmin -p drupal_database > db_drupal_database_{date}.sql
Load: mysql -u  -p < db_{name}_{date}.sql

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sudo chown -R admin_user:www-data /path/to/drupal
sudo chown -R www-data:{ username here } /var/www/html

sudo find /var/www/lol_system -user { username here }
sudo find /var/www/lol_system/cms -type d  -exec chown www-data:www-data {} \;

sudo find /path/to/drupal -type d -exec chmod g+s {} \;
sudo find /var/www/html -type d -exec chmod g+s {} \;

chmod g+w: Adds the group write permission (g+w) without modifying other existing permissions (like execute).

 chmod g+s:  The s in the permissions (e.g., drwxrwsr-x) refers to the Set Group ID (SGID) bit for directories. When the SGID bit is set on a directory, it ensures that:

- Any files or subdirectories created within the directory will automatically inherit the same group as the parent directory, rather than the primary group of the user who creates them.

- This is especially useful in collaborative environments, such as when multiple users are working on a Drupal site and the web server group (www-data) needs consistent group ownership.

Before applying SGID:
drwxrwxr-x  2 admin_user www-data 4096 Jan 22 04:33 js
After applying SGID:
drwxrwsr-x  2 admin_user www-data 4096 Jan 22 04:33 js

sudo find /path/to/drupal -type d -exec chmod 775 {} \;
sudo find /var/www/(project) -type d -exec chmod 775 {} \;

sudo find /path/to/drupal -type f -exec chmod 664 {} \;
sudo find /var/www/(project) -type f -exec chmod 664 {} \;

Update ~/.bashrc :
umask 002
 

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:/var/www/( project name )/cms/web/sites/default$ cp default.services.yml services.yml
:/var/www/( [project name )/cms/web/sites/default$ cp default.settings.php settings.php
 

-rw-r--r-- 1 user_name   www-data 10656 Jan 20 12:48 services.yml
-rw-r--r-- 1 user_name   www-data 36406 Jan 20 12:56 settings.php 

Add Trusted Host to the settings.php

$settings['trusted_host_patterns'] = [
 '^example\.com$',
 'example\.lol$'
];

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