check_file_count.sh

#!/bin/sh
#
# ## Plugin for Nagios to monitor the count of files in directory
# ## Written by Juned Memon
# ##
# ## - 20140312 Tested on Centos
#
#
# ## You are free to use this script under the terms of the Gnu Public License.
# ## No guarantee - use at your own risc.
#
#
# Usage: ./check_file_count -d <path> -w <warn> -c <crit>
#
# ## Description:
#
# This plugin determines the number of iles inside a a directory (including sub dirs)
# and compares it with the supplied thresholds.

#PATH=""

LS="/bin/ls"
CUT="/usr/bin/cut"
WC="/usr/bin/wc"
GREP="/bin/grep"
FIND="/usr/bin/find"

PROGNAME=`/bin/basename $0`
PROGPATH=`echo $0 | /bin/sed -e 's,[\\/][^\\/][^\\/]*$,,'`
REVISION="Revision 1.1"
AUTHOR="Juned Memon"

# Exit codes
STATE_OK=0
STATE_WARNING=1
STATE_CRITICAL=2
STATE_UNKNOWN=3
STATE_DEPENDENT=4

print_revision() {
    echo "$REVISION $AUTHOR"
}

print_usage() {
    echo "Usage: $PROGNAME -d|--dirname <path> [-w|--warning <warn>] [-c|--critical <crit>]"
    echo "Usage: $PROGNAME -h|--help"
    echo "Usage: $PROGNAME -V|--version"
    echo ""
    echo "<warn> and <crit> number of files in each sub-direcory"
}

print_help() {
    print_revision $PROGNAME $REVISION
    echo ""
    echo "Nagios Plugin to count the files in Directory/Subdirecory"
    echo ""
    print_usage
    echo ""
}

compare_threshold(){
	if [ "$thresh_warn" != "" ]; then
		if [ $count -ge $thresh_warn ]; then
			exitstatus=$STATE_WARNING
		fi
	fi
	if [ "$thresh_crit" != "" ]; then
		if [ $count -ge $thresh_crit ]; then
			exitstatus=$STATE_CRITICAL
		fi
	fi
	
}

# Make sure the correct number of command line
# arguments have been supplied

if [ $# -lt 1 ]; then
    print_usage
    exit $STATE_UNKNOWN
fi

# Grab the command line arguments

thresh_warn=""
thresh_crit=""
perfdata=""
msg=""
exitstatus=$STATE_OK #default
result=$STATE_OK
while test -n "$1"; do
    case "$1" in
        --help)
            print_help
            exit $STATE_OK
            ;;
        -h)
            print_help
            exit $STATE_OK
            ;;
        --version)
            print_revision $PROGNAME $VERSION
            exit $STATE_OK
            ;;
        -V)
            print_revision $PROGNAME $VERSION
            exit $STATE_OK
            ;;
        --dirname)
            dirpath=$2
            shift
            ;;
        -d)
            dirpath=$2
            shift
            ;;
        --warning)
            thresh_warn=$2
            shift
            ;;
        -w)
            thresh_warn=$2
            shift
            ;;
        --critical)
            thresh_crit=$2
            shift
            ;;
        -c)
            thresh_crit=$2
            shift
            ;;
        *)
            echo "Unknown argument: $1"
            print_usage
            exit $STATE_UNKNOWN
            ;;
    esac
    shift
done

##### Get size of specified directory
error=""
for dir in $($FIND $dirpath/* -type d)
do
	count=$(ls -l $dir| wc -l )
	count=$(echo $count - 1 | bc ) # On my system one additional line mentioning total is presnt
	compare_threshold
	msg=$msg" $dir($count);"
	perfdata=$perfdata" ${dir#$dirpath}=${count};${thresh_warn};${thresh_crit};"
	if [ $exitstatus -eq 0 ]
	then
		result=$(echo $result + $exitstatus | bc)
	else
		result=$exitstatus
	fi
done

if [ $result -eq 0 ];then
	msg="File Count OK :"$msg
elif [ $result -eq 1 ];then
	msg="File Count WARNING :"$msg
elif [ $result -eq 2 ];then
        msg="File Count CRITICAL :"$msg
fi

echo "$msg|$perfdata"
exit $result