When Joomla admin section shows the all files unwritable in ” System Info” Then you need to correct the permission by using following steps. I am able to solve this issue with the following steps.
cd /var/www/vhosts/[domain.com]
chown -R [username]:psacln httpdocs
chmod -R g+w httpdocs
find httpdocs -type d -exec chmod g+s {} \;
Add the ‘apache’ user to the ‘psacln’ group by editing ‘/etc/group’.
vi /etc/group
change from
psacln:x:2524:
to
psacln:x:2524:apache
Done
