2 export PATH=$PATH:/sbin:/usr/sbin
4 logfile=/var/local/log/update-system.log
5 tmpfile=/tmp/update-system.list
7 apt-get update -y > /dev/null 2>&1
9 apt list --upgradeable > $tmpfile 2> /dev/null
10 uptodate=$(grep -v "^Listing" $tmpfile | wc -l)
12 if [ $uptodate -ne 0 ]; then
13 cat $tmpfile >> $logfile && rm $tmpfile
15 apt-get upgrade -y >> $tmpfile
17 held_back=$(grep "kept back" $tmpfile | wc -l)
19 if [ $held_back -ne 0 ]; then
20 echo "$(date): $HOSTNAME not updated - packages held back" >> $logfile
22 cat $tmpfile >> $logfile && rm $tmpfile
25 echo "$(date): Updated $HOSTNAME" >> $logfile
28 apt-get autoremove -y >> /dev/null 2>&1
32 echo "$(date): No updates for $HOSTNAME" >> $logfile