in Jessie

How to upgrade from wheezy to jessie

Follow these steps to upgrade your system from Debian Wheezy (7.x) to Debian Jessie (8.x).

1. Update all packages currently installed to the latest wheezy versions

apt-get update
apt-get upgrade

2. Replace all occurrences of wheezy with jessie in the apt sources file (pico /etc/apt/sources.list). Here’s an example of what the file could look like after the change:

deb http://ftp.debian.org/debian/ jessie main contrib non-free
deb http://security.debian.org/ jessie/updates main contrib non-free

3. Update apt repository

apt-get update

4. Upgrade all packages

apt-get dist-upgrade

5. Restart the system

reboot

6. Verify that the system is updated to version 8 / jessie

cat /etc/debian_version

It should read version 8.0.0 or greater

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