[Gllug] Firewall Setup Script

[Jon Dye]

Richard Smith wrote:
[...]
> Quickie no 2: apt-get install cron-apt - which runs apt-get update daily 
> (which downloads packages too) and all you need to do is apt-get upgrade 
> on a daily basis and your server is updated.

I use a home made script for this which only emails me when there are 
any updates to do which I thought I'd share.  I've put the following in 
/etc/cron.daily/check_for_updates:

 >#!/bin/bash
 >
 >export PATH=/bin:/usr/bin
 >
 >TMPFILE=`mktemp`
 >trap "rm $TMPFILE" EXIT # clearup tempfile on exit
 >
 >aptitude update > /dev/null && \
 >        aptitude --assume-yes --simulate upgrade > "$TMPFILE"
 >
 >if [ -s "$TMPFILE" ]; then
 >        NUM_UPGRADES=`grep "packages upgraded" "$TMPFILE" | cut -d " " 
-f 1`
 >        if [ $NUM_UPGRADES -gt 0 ]; then
 >                cat "$TMPFILE"
 >        fi
 >else
 >        echo "An error occured while checking for updates:"
 >        echo
 >        cat "$TMPFILE"
 >fi

JD


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