Shell_Script_OS_Database

i=1;
j=1;
echo -n "Enter Database Name : "
read emp

while [ $i = 1 ]
do
	echo "-----------------------------------"
	echo "1. Add Employee Record."
	echo "2. View Employe3 Record."
	echo "3. Modify Employee Record."
	echo "4. Count Total No Of Employee."
	echo "5. Employee Gros And Salary."
	echo -n "Enter Choose : "
	read ch

	case $ch in

	1)	echo -n "Emp_Name : "
		read emp_name;

		echo -n "Emp_Gender : "
		read emp_gender;

		echo -n "Emp_Desiganation : "
		read emp_desi;

		echo -n "Emp_Salary :"
		read emp_salary;

		echo "$j|$emp_name|$emp_gender|$emp_desi|$emp_salary" >> $emp;
		j=`expr $j + 1`;
		;;

	2)	sort -n -k1 $emp;
		;;

	3)	echo "Enter Emp_No :"
		read n;

		grep -i "$n" $emp | tee x;
		wc -c x | tee y;
		a=`cut -d " " -f 1 y`
		if [ "$a" = 0 ]
		then
			echo "Record not found"
		else
			echo -n "Emp_Name : "
			read emp_name;

			echo -n "Emp_Gender : "
			read emp_gender;

			echo -n "Emp_Desiganation : "
			read emp_desi;

			echo -n "Emp_Salary :"
			read emp_salary;

			grep -v "$n" $emp | cat > def;
			cat def | tee $emp;
			echo "$n|$emp_name|$emp_gender|$emp_desi|$emp_salary" >> $emp;
		fi
		;;

	4)	wc -l $emp;
		;;

	5)	echo -n "Enter No. ";
		read temp;
		grep -i "$temp" $emp | tee sal;
		echo

		salary=`cut -d "|" -f5 sal`;

		hra=$((( $salary \* 5 ) / 100));
		da=$((( $salary \* 13 ) / 100));
		ta=800;
		tax=$((( $salary \* 5 ) / 100));
		gs=$((  $salary + $hra + $da + $ta));
		ns=$(( $gs - $tax));

		echo "Gross Salary : $gs";
		echo "Neet Salary : $ns";
		;;

	6) sort -n $emp;
		;;

	*)	exit
		;;

	esac

	echo -n "Do You Want To Conti...?"
	read i
	echo "-----------------------------------"
	if [ $i = 0 ]
	then
		exit
	fi
done