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

Write a shell script to find a year is leap year or not.

Write a shell script to find a year is leap year or not.

echo "Enter Year:"

read y

year=$y

y=$(( $y % 4 ))

if [ $y -eq 0 ]

then

          echo "$year is Leap Year!"

else

          echo "$year is not a Leap Year!"

fi

Output:

Enter Year:

2019

2019 is not a Leap Year!

Write shell script to find out biggest number from given three numbers.

Write shell script to find out biggest number from given three numbers. 

echo "enter first number"

read first

echo "enter second number"

read sec

echo "enter third number"

read third

if [ $first -gt $sec ] ; then

if [ $first -gt $third ] ; then

echo -e " $first is greatest number "

else

echo -e " $third is greatest number "

fi

else

if [ $sec -gt $third ] ; then

echo -e " $sec is greatest number "

else

echo -e " $third is greatest number "

fi

fi

Output
# bash bignum.sh
enter first number
23
enter second number
34
enter third number
12
34 is greatest number

Write a shell script to search an element in an array.

  Write a shell script to search an element in an array.

Script:-

echo "enter total no. of values"

read n;

flag=0

echo "enter array:"

for((i=0;i<n;i++))

do

read arr[$i]

done

echo "enter array:"

echo "enter number you wanna search"

read n1

for((i=0;i<n;i++))

do

a=$((arr[$i]))

echo $a

if [ $a -eq $n1 ] ;then

flag=1

break

fi

done

if [ $flag -eq 0 ] ;then

echo "number not found"

else

echo "number is found at $(($i+1)) location"

fi

Output:

enter total no. of values
2
enter array:
23
43
enter number you wanna search
23
23
number is found at 1 location