
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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The script in the bash shell of Linux
Write a calculator script using if and elif statements called “calc-yourlastname.sh” that will add (add), subtract (sub), multiply (mul) and integer divide (div) two numbers. The script should take 3 arguments from the command line and produce the output.
The command line syntax is # ./scriptfile operation number1 number2.
Integer division will yield only the quotient and no remainder.
You can use `expr expression` or $((expression)) to perform your math
For example, your results should appear like:
[root@localhost chap7]# ./calc-smith.sh add 3 2
3 + 2 = 5
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