remove-old-kernels.cron

#!/usr/bin/bash

# cron job to remove old kernels
# this runs remove-old-kernels to remove old kernels according
# to the settings in /etc/remove-old-kernels.cfg

if [[ -x /usr/sbin/remove-old-kernels ]]; then
# Trim log before starting remove-old-kernels with colours disabled
    if [[ -f /var/log/remove-old-kernels.log ]]; then
        keeplines=1000; fail=""
        roktmplog=$(mktemp)
        ( tail -n $keeplines /var/log/remove-old-kernels.log > $roktmplog && \
        cat $roktmplog > /var/log/remove-old-kernels.log && rm -f $roktmplog ) || fail="WARNING: log trim failed"
    fi
echo -e "\n=========================== $(date +%d/%m/%Y-%H:%M) ===========================\n$fail" >> /var/log/remove-old-kernels.log
# Use -c option to check that CRON=1|y is in the cfg file before running in auto mode.
    /usr/sbin/remove-old-kernels -c -m >> /var/log/remove-old-kernels.log
fi