#!/bin/sh

cronfile=/etc/cron.d/ksplice
# Run at a random time within 20 minutes of each half hour.
randfirst=$(($(od -An -N2 -d /dev/urandom) % 20))
randsecond=$(($randfirst + 30))
if [ -e "$cronfile" ] && \
   ! echo 5f8ac9a8816940c1e309b2e3e5bf725c '' "$cronfile" | md5sum -c --status; then
    echo '# Replaced by Ksplice on '$(date --iso) > "$cronfile"
else
    rm -f "$cronfile"
fi
mkdir -p /etc/cron.d
cat >>"$cronfile" <<EOF
# $cronfile: cron job for the Ksplice client
#
# PLEASE DO NOT MODIFY THIS CRON JOB.
# Instead, contact Ksplice Support at ksplice-support_ww@oracle.com.
#
# The offsets below are chosen specifically to distribute server load
# and allow for Ksplice server maintenance windows. This cron job
# also only contacts the Ksplice server every Nth time it runs,
# depending on a load control setting on the Ksplice server.
#
# If you would like to adjust the frequency with which your
# systems check for updates, please contact Ksplice Support at
# ksplice-support_ww@oracle.com
$randfirst,$randsecond * * * * root export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin && [ -x /usr/bin/ksplice ] && (/usr/bin/ksplice --cron user upgrade; /usr/bin/ksplice --cron xen upgrade)
EOF