Shell Programming and Scripting

#!/bin/bash
#
#auditd.cron
#
#-------------------------------------------------------------------
# This function is called whenever a program in this script
# returns a non-zero status.
#-------------------------------------------------------------------
doexit()
{
        echo '************************************************'
        echo ' FATAL ERROR !'
        echo '************************************************'
        exit 255
}
#
set -vax
#
curdttm=`date +%Y%m%d%H%M%S`
#
##########
# This script can be installed to get a daily log rotation
# based on a cron job.
##########
#
/sbin/service auditd rotate
#
EXITVALUE=$?
#
if [ $EXITVALUE != 0 ]; then
    /usr/bin/logger -t auditd "ALERT exited abnormally with [$EXITVALUE]"
    doexit
fi
#
# Wait for log to rotate
sleep 60
#
mv /var/log/audit/audit.log.1 /var/log/audit/audit.log.${curdttm}
#
#
if [ $? -ne 0 ]; then doexit ; fi
#
/bin/gzip -9 /var/log/audit/audit.log.${curdttm}
#
if [ $? -ne 0 ]; then doexit ; fi
#
exit 0

/var/log/audit/audit.log {
    daily
    dateext
    rotate 91
    compress
    delaycompress # leaves the 1st file uncompressed
    postrotate
        kill -HUP `cat /var/run/auditd.pid 2> /dev/null` 2> /dev/null || true
        #maybe nicer: service auditd reload
    endscript
}