How to upgrade to Debian Linux 9 (stretch)
1. Update all packages currently installed to the latest versions apt-get update apt-get upgrade
Step by step tutorials showing you how to install and configure various applications and services on Debian based Linux distros.
1. Update all packages currently installed to the latest versions apt-get update apt-get upgrade
1. Update all packages currently installed to the latest wheezy versions apt-get update apt-get upgrade