Shell Programming and Scripting

I have a disk space check script that uses an exceptions file, the only issue with the script is that it does not work with values higher than the FSMAX=85 value. I have a file system that is at 92% and it doesn't change, so I would like to add it to the exceptions file. The exceptions file format is

/usr 92%

Below is the script, anyone know what I'm doing wrong?

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#!/usr/bin/ksh
#
#
#
##### DEFINE FILES AND VARIABLES HERE ####
FSMAX="85" # Max. FS percentage value
WORKFILE="/tmp/df.work" # Holds filesystem data
>$WORKFILE # Initialize to empty
OUTFILE="/tmp/df.outfile" # Output display file
>$OUTFILE # Initialize to empty
BINDIR="/operator" # Local directory
THISHOST=`hostname` # Hostname of this machine
EXCEPTIONS="${BINDIR}/exceptions" # Overrides $FSMAX
DATA_EXCEPTIONS="/tmp/dfdata.out" # Exceptions file w/o #, comments

####### DEFINE FUNCTIONS HERE #####

function load_EXCEPTIONS_file
{

# Ignore any line that begins with a pound sign, #
cat $EXCEPTIONS | grep -v "^#" | sed /^$/d > $DATA_EXCEPTIONS
}

###################################

function check_exceptions
{
while read FSNAME NEW_MAX # Feeding data from Bottom of Loop!!!
do
if [[ $FSNAME = $FSMOUNT ]] # Correct /mount_point?
then # Get rid of the % sign, if it exists!
NEW_MAX=$(echo $NEW_MAX | sed s/\%//g)

if [ $FSVALUE -gt $NEW_MAX ]
then # Over Limit...Return a "0", zero
return 0 # FOUND OUT OF LIMITS - Return 0
fi
fi
done < $DATA_EXCEPTIONS # Feed from the bottom of the loop!!

return 1 # Not found in File
}

#############################################
######## START OF MAIN #############
####################################

# If there is an exceptions file...load it...

[[ -s $EXCEPTIONS ]] && load_EXCEPTIONS_file

df -k | tail +2 | egrep -v "/dev/vx/dmp|/dev/vx/rdmp|/proc|/mnttab|/dev/fd|/var/run|sapdata" \
| awk '{print $1, $5, $6}' > $WORKFILE

# Loop through each line of the file and compare column 2
while read FSDEVICE FSVALUE FSMOUNT
do
FSVALUE=$(echo $FSVALUE | sed s/\%//g) # Remove the % sign
if [[ -s $EXCEPTIONS ]] # Do we have a non-empty file?
then

# Look for the current $FSMOUNT value in the file
# using the check_exceptions function defined above.
check_exceptions
RC=$? # Get the return code from the function
if [ $RC -eq 0 ] # Found Exceeded in Exceptions File!!
then
echo "$FSDEVICE mounted on $FSMOUNT is ${FSVALUE}%" \
>> $OUTFILE
elif [ $RC -eq 1 ] # Not found in exceptions, use defaults
then
if [ $FSVALUE -gt $FSMAX ] # Use Script Default
then
echo "$FSDEVICE mounted on $FSMOUNT is ${FSVALUE}%" \
>> $OUTFILE
fi
fi
else # No exceptions file use the script default
if [ $FSVALUE -gt $FSMAX ] # Use Script Default
then
echo "$FSDEVICE mounted on $FSMOUNT is ${FSVALUE}%" \
>> $OUTFILE
fi
fi
done < $WORKFILE # Feed the while loop from the bottom...
# Display output if anything is exceeded...

if [[ -s $OUTFILE ]]
then
echo "\nFull Filesystem(s) on ${THISHOST}\n"
cat $OUTFILE
print
fi

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