Para garantir que o sistema possa ser actualizado, nada melhor que ser informado das actualizações disponíveis. O apticron é um utilitário que é executado diariamente de uma forma automática, verifica se já actualizações disponíveis para o nosso sistema e informa o administrador por email.

server:~# apt-get install apticron

Sempre que houver uma actualização disponível para o sistema, é enviado um email ao administrador do sistema:

From:  "root" <root@home.lan> 
Subject:  Debian package updates on server 
Date:  Wed, August 22, 2007 07:32 
To:  root@home.lan 

--------------------------------------------------------------------------------


apticron report [Wed, 22 Aug 2007 06:32:07 +0100]
========================================================================

apticron has detected that some packages need upgrading on: 

        server.home.lan 
        [ 192.168.1.100 ]

The following packages are currently pending an upgrade:

        clamav 0.91.2-1~volatile1
        clamav-base 0.91.2-1~volatile1
        clamav-daemon 0.91.2-1~volatile1
        clamav-docs 0.91.2-1~volatile1
        clamav-freshclam 0.91.2-1~volatile1
        libclamav2 0.91.2-1~volatile1

========================================================================

Package Details:

Reading changelogs...
--- Changes for clamav (clamav clamav-base clamav-daemon clamav-docs
clamav-freshclam libclamav2) ---
clamav (0.91.2-1~volatile1) etch-volatile; urgency=low

    * New upstream version
    - fix call to tolower() which led to a crash in libclamav
    - fix possible NULL dereference, e.g. when parsing email with RFC2397
      URI
    - fix floating point exception when using ScanOLE2
    - fix possible NULL dereference in rtf.c
    * Handle new option DetectPUA in maintainer scripts

 -- Stephen Gran <sgran@debian.org>  Tue, 21 Aug 2007 11:23:05 +0100

========================================================================

You can perform the upgrade by issuing the command:

        aptitude dist-upgrade

as root on server.home.lan

It is recommended that you simulate the upgrade first to confirm that
the actions that would be taken are reasonable. The upgrade may be 
simulated by issuing the command:

        aptitude -s -y dist-upgrade

-- 
apticron

 

O administrador poderá então proceder à actualização do sistema, com o comando apt-get dist-upgrade.