Howto apt
=========
1. List installed packages
apt --installed list
apt --installed list |grep webkit
2. Install package
apt-get install webkit
3. Remove package
apt-get remove webkit
4. Update package information
apt-get update
5. Upgrade
apt-get upgrade
apt-get dist-upgrade
6. Configure
/etc/apt/sources.list
7. Autoremove
apt-get autoremove
8. Clean cache
apt-get clean