sudo chmod -R 777 /opt/lampp

chmod -R 777 /var/www

chmod -R 777 /var/www

find /var/www -type f -exec chmod -x {} ;

groupadd development

chown  -R www-data:development /web

chmod -R 570 /web

chmod -R g+rwxs /web/

find /web -type f -exec chmod -x {} ;

groups username

usermod -G development username

umask 0002

Subsystem       sftp    internal-sftp -u 0002

usermod -G otrogrupo,development,... username