Setup file permission in Joomla CMS

setperm.sh

#!/bin/bash

pwd=${PWD}

[[ $pwd =~ ^/var/www* ]] ||  exit 0
echo 'PWD is subdirectory of /var/www, applying permissions ...'

find . -exec chown www-data:www-data {} \;
find . -type f -exec chmod 644 {} \;
find . -type d -exec chmod 755 {} \;

#-- add up extra security after testing
#-- remove all groups/others permission
#sudo chmod -R go-rwx .
#-- permit only group to RW
#sudo chmod -R g+rw   .
#-- other only can read
#sudo chmod -R o+r    .