Write shell script, using case statement to perform basic math operation as follows : + Addition - Substraction / Division x Multiplication.

Write shell script, using case statement to perform basic math operation

 as follows :

 + Addition

 - Substraction

 / Division

 x Multiplication.

script:-

if [ $# -eq 3 ]

  then

       case $2 in

         +)   let z=$1+$3;;

         -)   let z=$1-$3;;

         /)   let z=$1/$3;;

         x|X) let z=$1*$3;;

         *)   echo "Warning: $2 invalid operator, only +, -, x, / operator"\

                     " allowed."

              exit;;

       esac

       echo "Answer is $z"

else

       echo "Usage: $0 value1 operator value2"

       echo "         Where, value1 and value2 are numeric values"

       echo "                operator: +, -, /, x (multiplication)"

                       fi   

Write a shell script to print sum of digit of any number

Write a shell script to print sum of digit of any number

echo -n "Enter number : "

read n

# store single digit

sd=0

# store number of digit

sum=0

# use while loop to caclulate the sum of all digits

while [ $n -gt 0 ]

do

    sd=$(( $n % 10 )) # get Remainder

    n=$(( $n / 10 ))  # get next digit

    sum=$(( $sum + $sd )) # calculate sum of digit

done

echo  "Sum of all digit  is $sum"

Ouput:

[root@localhost shell_script]# bash sumofdigit.sh

Enter number : 123

Sum of all digit  is 6

Write a shell script to print sum of all even numbers from 1 to 10.

Write a shell script to print sum of all even numbers from 1 to 10.

Script:

echo enter limit

read n

i=2

while [ $i -lt $n ]

do

sum=$((sum+i))

i=$((i+2))

done

echo $sum.

Output

[root@localhost shell_script]# bash sumofevenno.sh

enter limit

10

20.

Write a shell script to calculate factorial of a given number

Write a shell script to calculate factorial of a given number

Script:

echo "Enter a number"

read num

fact=1

while [ $num -gt 1 ]

do

  fact=$((fact * num))  #fact = fact * num

  num=$((num - 1))      #num = num - 1

done

echo $fact

Output:

[root@localhost shell_script]# bash factorial.sh

Enter a number

3

6

Write a shell script to print table of a given number

Write a shell script to print table of a given number

Script:

echo "Enter a Number"

read n

i=0

while [ $i -le 10 ]

do

          echo " $n x $i = `expr $n \* $i`"

          i=`expr $i + 1`

done

Output:

[root@localhost shell_script]# bash  multiplicationtable.sh

Enter a Number

2

 2 x 0 = 0

 2 x 1 = 2

 2 x 2 = 4

 2 x 3 = 6

 2 x 4 = 8

 2 x 5 = 10

 2 x 6 = 12

 2 x 7 = 14

 2 x 8 = 16

 2 x 9 = 18

2 x 10 = 20

Write a shell script to print all even and odd number from 1 to 10.

Write a shell script to print all even and odd number from 1 to 10.

Script:

echo enter n value as range to calculate odd and even numbers.

read n

i=1

while [ $i -le $n ]

do

if [ `expr $i % 2` -eq 0 ]

then

echo even=$i

else

echo odd=$i

fi

i=`expr $i + 1`

done

Output:

[root@localhost shell_script]# bash oddeven.sh

enter n value as range to calculate odd and even numbers.

10

odd=1

even=2

odd=3

even=4

odd=5

even=6

odd=7

even=8

odd=9

even=10

Write a shell script to calculate profit or loss.

Write a shell script to calculate profit or loss.

echo "input nthe cost price of an item"

read cop

echo "input the selling price of the item"

read sop

if test $cop -eq $sop

then

echo "no profit or no gain"

fi

if test $cop -gt $sop

then

s=`echo $cop - $sop |bc`

echo " u obtained loss of rs:$s"

else

s=`echo $sop - $cop |bc`

echo "u obtained profit of rs:$s"

fi

Output:

[root@localhost shell_script]# bash profitloss.sh

input nthe cost price of an item

100

input the selling price of the item

120

u obtained profit of rs:20