INSTALL

get mybb-1.8.19.tgz & put it in $path_install

domain="17112018.fr"
subdomain="forum"
path_install="/var/share/www/17112018.fr"
path="$path_install/forum"
version="1.8.19"
file_mybb="mybb-${version}"

cd "$path_install"
tar xzf "${file_mybb}.tgz"
ln -sv "$file_mybb" "$subdomain"
ln -sv "$file_mybb/Upload/" "$subdomain"

PRECONF

cp -a "$subdomain/htaccess.txt" "$subdomain/.htaccess"
sed -i '/Order Deny,Allow/d' "$subdomain/.htaccess"
sed -i 's/Deny from all/Require all denied/' "$subdomain/.htaccess"

# add subdomain in apache conf
nano /etc/apache2/sites-available/$domain.conf
sysars
a2ensite ${domain}.conf

SETUP

https://${subdomain}.${domain} # launch

POSTCONF

systemctl restart apache2.service
nano inc/config.php

chmod 666 "$subdomain/inc/config.php" "$subdomain/inc/settings.php"
chmod 777 "$subdomain/cache/" "$subdomain/cache/themes/" "$subdomain/uploads/" "$subdomain/uploads/avatars/"