Upgrade

Upgrade debian

STEP 1 CHECK YOUR CURRENT DISTRIBUTION

cat /etc/debian_version

current version (sept 2015) 7.8

table of reference:: table with colors |https://en.wikipedia.org/wiki/Debian_version_history

check :: wheezy old stable

current version (aug 2017) 8.8
check :: jessie old stable

STEP 2 UPDATE CURRENT DISTRIBUTION

old stable > to stable

apt-get update && apt-get dist-upgrade && apt-get autoremove

(first update than upgrade, than upgrade again if something didn't happen well and autoremove the packages which are not used)

STEP 3 UPDATE THE SOURCE.LIST FOR THE NEW DEBIAN RELEASE

update the source.list

nano /etc/apt/sources.list

wikipedia / debian > table with colors
(change the name of the distribution)

|https://wiki.debian.org/SourcesList

deb http://www.debian.org/debian jessie main
deb-src http://www.debian.org/debian jessie main

STEP 4 UPGRADE

apt-get update && apt-get dist-upgrade && apt-get dist-upgrade && apt-get autoremove