Shell Programming and Scripting

#!/usr/bin/ksh

USSD_PATH=/usr/Nokia/USSD/log
LOGFILE=$USSD_PATH/ussd_nokia.log
DATE_STAMP=`date +%d%m%Y`
HOUR=`date +%H`
DAY=`date +%d`

FILE=$USSD_PATH/ussdlog$DATE_STAMP

if [ $HOUR -eq 0 ];then
PREV_HOUR=23
else
PREV_HOUR=`expr $HOUR - 1`
fi

if [ $HOUR -eq 1 ];then
echo "Date|Hour|Total Attempts|Total Successful|Total Errors|Time Out Errors|WNP Connect Errors|Other Errors" > $FILE
fi

grep "|$DAY-" $LOGFILE| grep "|$PREV_HOUR:" > $USSD_PATH/temp1

restart_time=`grep "success connecting to NRH server" $USSD_PATH/temp1 | cut -d"|" -f3`

if [ -z "$restart_time" ];then
echo "USSD Restarted at $restart_time" >> $FILE
fi

ENTRIES=`wc -l $USSD_PATH/temp1|awk '{print $1}'`
SUCCESS=`grep " TEMPORARY FIX" $USSD_PATH/temp1 | wc -l`
TIMEOUT=`grep "no response from NRH" $USSD_PATH/temp1 | wc -l`
WNP=`grep "detected WNP layer error" $USSD_PATH/temp1 | wc -l`
OTHER=$((ENTRIES-(SUCCESS+TIMEOUT+(WNP*3))))
TOTAL=$((SUCCESS + $TIMEOUT + WNP + OTHER))
ERRORS=$((TIMEOUT + WNP + OTHER))
echo "$DAY|$PREV_HOUR|$TOTAL|$SUCCESS|$ERROR|$TIMEOUT|$WNP|$OTHER" >> $FILE

stats.sh: syntax error at line 34: `OTHER=$' unexpected