Write a script for arithmetic calculator using command line arguments



 #!/bin/bash

<<doc

Name : Omprakash A Timashetti

Date : 12/08/2022

Description : Write a script for arithmetic calculator using command line arguments


Sample Input :./arithmatic_calc.sh 25 + 41

Sample Output : 25 + 41 = 66

Sample Input :./arithmatic_calc.sh 10 x 5 

Sample Output : 10 x 5 = 50

Sample Input :./arithmatic_calc.sh 25 / 5

Sample Output : 25 / 5 = 5.00

Sample Input :./arithmatic_calc.sh 10.2 - 5.6

Sample Output : 10.2 - 5.6 = 4.6

Sample Input :./arithmatic_calc.sh 

Sample Output :Error : Please pass the arguments through command line.

               Usage:./arithmatic_calc.sh 2.3 + 6.7


Sample Input :./arithmatic_calc.sh 25

Sample Output : Error:Please pass 3 arguments.

                Usage:./arithmatic_calc.sh 2.3 + 6.7

doc

if [ $# -eq 0 ]     #check for the command line arguments 

                            

then 

    echo "Error : Please pass the arguments through command line."

    echo "Usage:./arithmatic_calc.sh 2.3 + 6.7"

 

elif [ $# -eq 3 ]   #check for command line argument whether 3 argument passed or not

then 

case $2 in                      #case statement to get basic calculation

    +) sum=`echo "$1+$3" | bc ` #Addition of two number

        echo "$1 $2 $3 = $sum"

        ;;

    -) sub=`echo "$1-$3" | bc `  #substraction of two number

        echo "$1 $2 $3 = $sub"

        ;;

    x) mul=`echo "$1*$3" | bc `  #Multiplication of Two Number

        echo "$1 $2 $3 = $mul"

        ;;

    /) div=`echo "scale=2; $1/$3 " | bc ` #Division of Two Number

        echo "$1 $2 $3 = $div"

        ;;

    *) 

       echo "Error : Please enter valid operator" 

       

esac

    

else 

    echo "Error:Please pass 3 arguments."

    echo "Usage:./arithmatic_calc.sh 2.3 + 6.7"


fi

Comments

Post a Comment

Popular posts from this blog

Count the number of users with user IDs between given range.

Image
 #!/bin/bash <<doc Name : Omprakash A Timashetti Date : 21/08/2022 Description :Count the number of users with user IDs between given range. Sample Input1: ./user_ids.sh Sample Ouput1:Total count of user ID between 500 to 10000 is: 2 Sample Input2: ./user_ids.sh 0 100 Sample Output2:Total count of user ID between 0 to 100 is : 3 Sample Input3:./user_ids.sh 100 Sample Output3:Error : Please pass 2 arguments through CL.                Usage : ./user_ids.sh 100 200 Sample Input4:./user_ids.sh 200 100 Sample Output4:Error : Invalid range. Please enter the valid range through CL. doc #Count the number of of users  with user id between given range.  Array=($(cut -d ":" -f3 /etc/passwd))                                #Store userId in Array count=0                                                              #Initialize count=0 if [ $# -eq 0 ]                                                      #If no Command line argument is passed then                                       
Read more

Write a script to print system information using commands

Image
  #!/bin/bash <<doc Name:Omprakash A Timashetti Date:23/08/2022 Description:Write a script to print system information using commands Sample Execution: ./system_info.sh 1. Currently logged users 2. Your shell directory 3. Home directory 4. OS name & version 5. Current working directory 6. Number of users logged in 7. Show all available shells in your system 8. Hard disk information 9. CPU information. 10. Memory Informations 11. File system information. 12. Currently running process. Enter the choice : 2 Your shell directory is /bin/bash doc option=y                            #For first time initialize option to y=yes to get first time menu while [ $option = y ] do echo "1. Currently logged users"     #Dispaly menu echo "2. Your shell directory" echo "3. Home directory" echo "4. OS name & version" echo "5. Current working directory" echo "6. Number of users logged in" echo "7. Show all available shells in y
Read more