====== Aggiornare Debian GNU/Linux da Lenny (versione 5.0) a Squeeze (versione 6.0) ======

Debian GNU/Linux [[http://www.debian.org|www.debian.org]]\\
Upgrade Debian Lenny (Debian 5.0) To Squeeze (Debian 6.0) On Xen VPS [[http://www.howtoforge.com/how-to-upgrade-debian-lenny-debian-5.0-to-squeeze-debian-6.0-on-xen-vps|www.howtoforge.com]]\\
Upgrade Debian Lenny To Squeeze In A Few Simple Steps [[http://www.howtoforge.com/upgrade-debian-lenny-to-squeeze-in-a-few-simple-steps|www.howtoforge.com]]

Veloce raffica di comandi (forse un giorno faro' una guida piu dettagliata)\\
Prima di tutto facciamo una copia del file **/etc/apt/sources.list**

  # cp /etc/apt/sources.list /etc/apt/sources.list.OLD

Il contenuto del file **/etc/apt/sources.list** dovrebbe diventare simile a questo:
<file bash sources.list>
## Debian Stable (Squeeze)
deb http://ftp.it.debian.org/debian/ squeeze main contrib non-free
deb-src http://ftp.it.debian.org/debian/ squeeze main contrib non-free

## Security updates
deb http://security.debian.org/ squeeze/updates main
deb-src http://security.debian.org/ squeeze/updates main
</file>

Primo round: aggiornamento pacchetti

  # apt-get update
  # apt-get upgrade
  # reboot

Secondo round: aggiornamento a squeeze

  # apt-get -d dist-upgrade
  # apt-get dist-upgrade
  # reboot

I problemi con MySQL si risolvono cosi

  # apt-get install mysql-server-5.1
  # apt-get autoremove
  # apt-get --purge clean

Controlliamo in **/etc/issue**

  # cat /etc/issue
  Debian GNU/Linux 6.0 \n \l

Se risponde in questo modo, allora l'upgrade e' avvenuto con successo.