Question

2) (20 points) Write a Bash shell script named "calc.sh" that a. Performs addition (+), subtraction (-), multiplication (x), and integer division (/) math operations. b. Takes in 2 operands and 1 operator and prints the result. Example: "calc.sh 5 + 3" would print "8" and "calc.sh 9 / 2" would print "4" c. If there are not exactly 3 arguments, or the second argument is not one of the operators in part (a), or first or third argument is not an integer, print an error message and exit d. If operator is division (/) and second operand is 0, then print error message "error: cannot divide by 0" and exit e. Hint: Use case statement

          2) (20 points) Write a Bash shell script named "calc.sh" that
a. Performs addition (+), subtraction (-), multiplication (x), and integer division (/) math
operations.
b. Takes in 2 operands and 1 operator and prints the result. Example: "calc.sh 5 + 3" would
print "8" and "calc.sh 9 / 2" would print "4"
c. If there are not exactly 3 arguments, or the second argument is not one of the operators in
part (a), or first or third argument is not an integer, print an error message and exit
d. If operator is division (/) and second operand is 0, then print error message "error: cannot
divide by 0" and exit
e. Hint: Use case statement

2) (20 points) Write a Bash shell script named "calc.sh" that
a. Performs addition (+), subtraction (-), multiplication (x), and integer division (/) math
operations.
b. Takes in 2 operands and 1 operator and prints the result. Example: "calc.sh 5 + 3" would
print "8" and "calc.sh 9 / 2" would print "4"
c. If there are not exactly 3 arguments, or the second argument is not one of the operators in
part (a), or first or third argument is not an integer, print an error message and exit
d. If operator is division (/) and second operand is 0, then print error message "error: cannot
divide by 0" and exit
e. Hint: Use case statement

Added by Corey H.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Supreeta N

09/15/2023

Step 1

We can use the "$#" variable to get the number of arguments passed to the script. If it is not equal to 3, we print an error message and exit. Show more…

Show all steps

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2) (20 points) Write a Bash shell script named "calc.sh" that a. Performs addition (+), subtraction (-), multiplication (x), and integer division (/) math operations. b. Takes in 2 operands and 1 operator and prints the result. Example: "calc.sh 5 + 3" would print "8" and "calc.sh 9 / 2" would print "4" c. If there are not exactly 3 arguments, or the second argument is not one of the operators in part (a), or first or third argument is not an integer, print an error message and exit d. If operator is division (/) and second operand is 0, then print error message "error: cannot divide by 0" and exit e. Hint: Use case statement