Steps on how to Fix Fatal error: Call to undefined function: mysql_connect()

1. command :sudo apt-get install php5-mysql
2. command :sudo dpkg-reconfigure php5-mysql
3. command :sudo /etc/init.d/mysql restart
4. command :sudo /etc/init.d/apache2 restart

Install chm reader in Ubuntu

command :sudo apt-get install xchm

Install unrar in Ubuntu

command :sudo apt-get install unrar
usage :unrar e