check_file_age

#!/bin/bash
#----------------------------------------
# File Present Check plugin for Nagios
#
#----------------------------------------
# Plugin variable description

PROGNAME=$(basename $0) 
RELEASE="Version 1.0" 
AUTHOR="Tim Bowers"

STATE_OK=0
STATE_WARNING=1
STATE_CRITICAL=2
STATE_UNKNOWN=3

# Functions plugin usage

print_release() {
    echo "$RELEASE $AUTHOR"
	exit 0
}

print_usage() {
	echo ""
	echo "$PROGNAME $RELEASE - Check age of files in a directory, alerting if over a certain value"
	echo ""
	echo "Usage: check_file.sh"
	echo ""
	echo " -h Show help page"
	echo " -w Warning age in minutes (minimum 1 minute)"
	echo " -c Critical age in minutes (minimum 1 minute)"
	echo ""
    echo "Usage: $PROGNAME"
    echo "Usage: $PROGNAME --help"
    echo ""
}

print_help() {
	print_usage
        echo ""
        print_release $PROGNAME $RELEASE
        echo ""
        echo "This plugin will check if a file is present or missing in a given directory"
	echo "-h is for opening this help list"
        echo ""
}

# Make sure the correct number of command line arguments have been 
# supplied
if [ $# -lt 1 ]; then
    print_usage
    exit $STATE_UNKNOWN 
fi 

while [ $# -gt 1 ]; do
	case "$1" in
        -h | --help)
            print_help
            exit $STATE_OK
            ;;
        -v | --version)
                print_release
                exit $STATE_OK
                ;;
	-w)	WARNINGVAL="$2"
		shift
		;;
	-c)	CRITICALVAL="$2"
		shift
		;;
	-d)	DIR="$2"
		shift
		;;
	*) 	echo "Unknown argument: $1"
        	print_usage
        	exit $STATE_UNKNOWN
        	;;
	esac 
shift
done 

## List files in ${DIR}

## Remove -maxdepth 1 to search subdir's as well
FILES_CRIT=($(find "${DIR}" -maxdepth 1 -type f -mmin +${CRITICALVAL}))
FILES_WARN=($(find "${DIR}" -maxdepth 1 -type f -mmin +${WARNINGVAL}))

#echo ${FILES_CRIT}

#echo ${CRITICALVAL}

if [ ! -z "$FILES_CRIT" ]; then
	# $FILES_CRIT is defined
	echo "CRIT: Files older than ${CRITICALVAL} minutes found!"
	exit $STATE_CRITICAL
else
	# $FILES_CRIT is not defined; Check $FILES_WARN
	if [ ! -z "$FILES_WARN" ]; then
		echo "WARN: Files older than ${WARNINGVAL} minutes found!"
		exit $STATE_WARNING
	fi
	
	echo "No outdated files found"
	exit $STATUS_OK
fi

echo "Unknown error"
exit $STATE_UNKNOWN