How to set permission for WordPress in DigitalOcean WordPress Droplet or with Ubuntu?

To Set the proper Permission for WordPress you needs to execute the following command.

Step 1: Connect command line interface using Putty/ Using Command-line Interface provided by DigitalOcean.
Step 2: Execute Following Command
sudo usermod -aG www-data $USER
This will adds the currently logged in user to the www-data group.

Step 3: Change ownership
sudo chown -R www-data:www-data /var/www
This will Changes the ownership of the /var/www directory to www-data group.

Step 4: Set permission for WordPress ( Here www contain all the WordPress files and folder)
sudo chmod -R 755 /var/www

Note: If you want to change the only permission for WordPress Folder without a group. You can execute the following command
find /var/www -type d -exec chmod 755 {} \;
find /var/www -type f -exec chmod 644 {} \;

If you still having error ‘could not create directory’ when updating a plugin
Please add define(‘FS_METHOD’,’direct’); to your wp-config.php.

Hope this will helps.