Shell Programming and Scripting

#!/bin/bash
# SYSTEM : monitor #
# PROGRAM NAME : monitor.ksh #
# #
# PURPOSE : This utility to space monitor in /AB/* folder project wise #
# #
# #
# #
# EXIT CODES : 0 - Program completed normally #
# >0 - Program fails #
################################################################################
################################################################################
# Initialize
################################################################################

data_base=/AB/*

DATA_DESK_TH_LIM=40
#------------------------------------------------------------------------------------------------
# Name : check_process_status
# Usage : check_process_status
# Description : This function checks whether the % of /AB/* Disk Spaces used is within Limit
# Exit Value : 0 on error 1 on success
#------------------------------------------------------------------------------------------------
function check_process_status {
EXIT_STATUS=1

df -k $data_base |grep % |awk '{print $4,$5}' |sed 's/%//g'| while read CMD_OUTPUT1;
do
uses=$(echo $CMD_OUTPUT1 | awk '{ print $1}' | cut -d'%' -f1 )
utilization=$(echo $CMD_OUTPUT1 | awk '{ print $2 }' )
if [ $uses -ge $DATA_DESK_TH_LIM ]
then
echo "------------------------------------------------------------------------------------------------"
echo " Spaces in $data_base is OVER THRESHOLD, \"$utilization ($uses%)\" on $(hostname) as on $(date)" >OP
echo "------------------------------------------------------------------------------------------------"
du -sk $utilization/*|sort -rn >>OP
EXIT_STATUS=0
fi
done
return $EXIT_STATUS
} # End of function check_process_status
###############################################################################
# Call script along with necessary parameters. #
###############################################################################

#-- Run the check_process_status
check_process_status
result=$?
if [ $result -eq 0 ]
then

echo "############################################################################################### ##"
echo " Script $0 started `date` "
echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~"
echo " WARNING : $data_base DISK Space in ONE or MORE Project Directory is OVER THRESHOLD"
echo "-------------------------------------------------------------------------------------------------"
echo " Script $0 execution completed `date` Error-Code $result"
echo "############################################################################################### ###"
echo " "
funEmailNotification "WARNING : /AB/* Space in ONE or MORE Project Directory is OVER THRESHOLD"
mail -s "Alert: Almost out of disk space $uses%" abc@@xyz.com <OP
exit $ERROR
else
echo "############################################################################################### ##"
echo " Script $0 started `date` "
echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~"
echo " NORMAL :/AB/* DISK Space size is UNDER THRESHOLD"
echo "-------------------------------------------------------------------------------------------------"
echo " Script $0 execution completed `date` Success-Code $result"
echo "############################################################################################### ###"
echo " "
#funEmailNotification "NORMAL : DISK Space size is UNDER THRESHOLD"
exit $SUCCESS
fi