구문 오류: 예기치 않은 파일 끝

#!/bin/bash
#organization: Seneca College
#Purpose: Validate a date
#Usage: chkdate year month day
#

year=$1; month=$2; day=$3; extra=$4
if [[ "$year" == "" || "$month" == "" || "$day" == "" ]]; then
        # Not enough data!
        echo Usage: chkdate year month day
        exit 0
fi
if [[ ! ( $year =~ ^[0-9]+$ && $month =~ ^[0-9]+$ && $day =~ ^[0-9]+$ ) ]]; then
        # Date not numeric!
        echo Usage: chkdate year month day
        exit 1
fi
if [[ $year -lt 1 || $year -gt 9999 || $month -lt 1 || $month -gt 12 || $day -lt 1 || $day -gt 31 ]]; then
        # Date out of range!
        echo Usage: chkdate year month day
        exit 2
fi
if [[ ( $month == 1 || $month == 3 || $month == 5 || $month == 7 || $month == 8 || $month == 10 || $month == 12 ) && $day -gt 31 ]]; then
        # Invalid day!
        echo Usage: chkdate year month day
        exit 3
fi
if [[ ( $month == 4 || $month == 6 || $month == 9 || $month == 11 ) && $day -gt 30 ]]; then
        # Invalid day!
        echo Usage: chkdate year month day
        exit 4
fi
if [[ ($month == 9) && ($year == 1752) && ( $day -gt 2) && $day -le 14  ]] ; then
        #invalid day!
        echo Usage: chkdate year month day
        exit 5

date -d $2/$3/$1 > /dev/null 2>&1
if [[ "$@" ]] ; then
        echo "valid date"
else
        echo "not a valid"
fi

내 스크립트에 44번째 줄이 있다고 하는데 총 줄수는 43개입니다