#!/bin/bash
#
# Created 20 April, 1999
# Lance Spitzner, lance@spitzner.net
#
# Shows last 10 entries of critical system logs.
# Build in some "artificial intelligence" using
# greps and sorts.  You can select a specific
# hosts logs, or you can select all hosts logs.
#
# Add whatever grep/sort statements you want to the
# functions below.  The ones included are just 
# examples.

##### Build variables
if [ "$1" = "all" ]; then
	system=""
else
	system=$1
fi

log=$2

##### Functions
secure () {
echo -e "\n\t--- Last 10 entries in /var/log/secure ---\n"
grep "$system" /var/log/secure | grep -v "172.16.1." | tail -10
}

messages () {
echo -e "\n\t--- Last 10 entries in /var/log/messages ---\n"
grep "$system" /var/log/messages | grep -E -v '(named|MARK)' | tail -10
}

maillog () {
echo -e "\n\t--- Last 10 entries in /var/log/maillog ---\n"
grep "$system" /var/log/maillog | tail -10
}

title () {
if [ "$system" = "" ]; then
	echo -e "\n### These are the log results of all systems ###"
else
	echo -e "\n### These are the log results of system $system ###"
fi
}

##### Actual program
case $log in
        secure)
	title
        secure
        ;;
        messages)
	title
        messages
        ;;
        maillog)
	title
        maillog
        ;;
	all)
	title
	secure
	messages
	maillog
	;;
        *)
	echo -e "\nUsage: `basename $0` <host> <log>"
	echo
	echo "	<host> "
	echo "	Can either be a single source you want to grep"
	echo "	for in the log, or type \"all\" for all hosts in the" 
	echo "	log file."
	echo
	echo "	<log>"
     	echo "	secure   -> for /var/log/secure"
	echo "	messages -> for /var/log/messages"
	echo "	maillog  -> for /var/log/maillog"
	echo -e "\tall 	 -> for all three log files\n"
;;
esac

exit 0