CPL Exp.No.7b for OBS

Exp.No.7b – SUM OF FIVE NUMBERS FROM COMMAND LINE

Coding

# Read N numbers from the user with command line argument and display its sum

if [ $#  -eq 0 ]

then

echo "Enter the arguments properly" fi

sum=0;

n=$#

for i in $*

do

sum=`expr $sum + $i`

shift done

if [ $n -ne 0 ]

then echo "The sum of $n number(s) is $sum" fi

CPL Exp.No.7a for OBS

Exp.No.7a – SUM OF FIRST FIVE NUMBERS USING FOR LOOP

Coding

# Find sum of first five numbers using for loop sum=0

for i in 1 2 3 4 5 do

sum=`expr $sum + $i`

done

echo "The sum of first five numbers is $sum"

CPL Exp.No.6c – MENU DRIVEN PROGRAM for OBS

Exp.No.6c – MENU DRIVEN PROGRAM

Coding

# Generate UNIX commands with menu driven program echo  " MENU "

echo  "1.List of files"

echo  "2.Today's Date" echo  "3.Process Status" echo  "4.Logged in Users"

echo  "5.Display the current working Directory" echo  "6.Quit"

echo  -n "Enter your choice" read ch

case "$ch" in

1) ls -l;;

2) date;;

3) ps;;

4) who;;

5) pwd;;

6) exit;;

*) echo "Invalid Choice" exit;;

esac

CPl Exp.No.6b for obs

Exp.No.6b – CHARACTER CLASSIFICATION

Coding

#Shell Program to classify char from Command Line char=$1

case "$char" in

[0-9] ) echo digit;;

[A-Z] ) echo Letter;;

? ) echo special letter;;

* ) echo enter a single character in command line;;

esac

CPL 6a Xperiment for OBS

Exp.No.6a – ARITHMETIC OPERATIONS USING CASE - ESAC

Coding

echo "Menu"

echo "1.Addition" echo "2.Subtraction" echo "3.Multiplication" echo "4.Division"

echo  -n "Enter your choice" read ch

echo  -n "Enter the values for a and b:"

read a b

case  ―$ch‖  in

c=`expr $a  + $b`

echo "The sum is $c";;

2) c=`expr $a  - $b`

echo "The difference is $c";;

3) c=`expr $a \* $b`

echo "The product is $c";;

4)  c=`expr $a / $b`

echo "The quotient is $c";;

*) echo "Enter the correct choice";;

esac