In Bash, the
let command is used to evaluate arithmetic expressions and assign the result to a variable. It provides a way to perform arithmetic calculations in a concise manner. Here’s the basic syntax of the
let <variable> <operator> <expression>
<variable> represents the name of the variable that will store the result of the expression.
<operator> is an arithmetic operator such as
<expression> is the arithmetic expression to be evaluated.
Here’s an example that demonstrates the usage of the
#!/bin/bash let "result = 2 + 3" echo "Result: $result" let "a = 5" let "b = 2" let "c = a * b" echo "c: $c"
In this example, the
let command is used to evaluate arithmetic expressions and assign the results to variables. The first
let command calculates the sum of 2 and 3 and stores it in the
result variable. The second
let command assigns the value 5 to the variable
a, the value 2 to the variable
b, and then multiplies
b, storing the result in the
When you run this script, it will output:
Result: 5 c: 10
let command is a convenient way to perform arithmetic calculations and assign the results to variables within Bash scripts. It allows you to evaluate complex arithmetic expressions and store the outcomes for further use.