Arithmetic Expansion
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What is Arithmetic Expansion?
Arithmetic expansion allows you to perform mathematical calculations directly within your shell scripts. It uses the $((...)) syntax to evaluate expressions, treating the contents inside the parentheses as an arithmetic expression. This enables you to perform operations like addition, subtraction, multiplication, division, and modulo, and assign the results to variables or use them in conditional statements.
Free resources to learn Arithmetic Expansion
More in stage 19: Script Arguments
Arithmetic Expansion: common questions
Can I learn Arithmetic Expansion in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Arithmetic Expansion in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Arithmetic Expansion tutorial for beginners?
It is lesson 89 of 166 in the free Shell / Bash roadmap, in stage 19, Script Arguments. If you are new to Shell / Bash, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.