Shell Scripting Tutorial for Beginners 10 - Perform arithmetic operations

Показать описание

The Arithmetic expression is very important feature for performing number arithmetic operations in scripts.
By default variables are treated as strings in bash scripts.
But parsing a string to numbers is very easy using double parentheses and external command such as expr.

Arithmetic operations in Bash Shell
Arithmetic operations can be done on integers using the following methods

$(( expression ))
echo "Addition = $(( number_1 + number_2 ))"

expr — evaluate expression
we can also use expr command to perform Arithmetic operations on numbers.

echo "Addition = $(expr $number_1 + $number_2 )"

★★★Top Online Courses From ProgrammingKnowledge ★★★

★★★ Online Courses to learn ★★★

★★★ Follow ★★★

DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission. This help support the channel and allows us to continue to make videos like this. Thank you for the support!