Brace expansion is a powerful feature in Bash that allows you to generate sequences of numbers or characters. It’s the simplest way to create a range.
Syntax:
{start..end}
This syntax generates a sequence starting from the start value and ending at the end value. Both the start and end will be included
Example : Generating numbers
echo {1..5} # Outputs: 1 2 3 4 5
Explanation: The brace expansion {1..5} tells Bash to create a sequence starting from 1 and ending at 5, generating the numbers: 1, 2, 3, 4, 5.
Example : Generating alphabets
echo {a..e} # Outputs: a b c d e
Explanation: Similarly, {a..e} generates a sequence of characters from a to e, so the output will be: a, b, c, d, e.
Specifying a Step Value
You can specify a step value by adding it after the end value, which allows you to control how much the value increments (or decrements) at each step.
