sudo apt-get install curl php-curl
sudo apt-get install aria2
mkdir /var/log/aria2c /var/local/aria2c
touch /var/log/aria2c/aria2c.log
touch /var/local/aria2c/aria2c.sess
chown www-data.www-data -R /var/log/aria2c /var/local/aria2c
chmod 770 -R /var/log/aria2c /var/local/aria2c
ln -s /usr/local/bin/youtube-dl /usr/bin/