Resetting File & Folder Permissions Magento 1.9 & 2.3

magento-permission.sh

# Setting up permission on Magento 1.9

# set all directories and subdirectories from the application to 775
# set all files to 644
# set directory app/etc/, var/, media/ and all its files and subdirectories to 777

cd <your Magento install dir>
find . -type d -exec chmod 775 {} \;
find . -type f – exec chmod 644 {} \;
chmod 777 -R app/etc/
chmod 777 -R var/
chmod 777 -R media/

# Setting up permission on Magento 2.3

cd <your Magento install dir>
find var generated vendor pub/static pub/media app/etc -type f -exec chmod u+w {} +
find var generated vendor pub/static pub/media app/etc -type d -exec chmod u+w {} +
chmod u+x bin/magento