How to use the command 'elixir' (with examples)

The ’elixir’ command is the interpreter for the Elixir programming language. It allows you to run Elixir files or evaluate Elixir code directly from the command line.

Use case 1: Run an Elixir file

Code:

elixir path/to/file

Motivation: Running an Elixir file allows you to execute the code written in that file. This can be useful when you have a script or program written in Elixir that you want to run without compiling it into an executable.

Explanation:

• elixir is the command to invoke the Elixir interpreter.
• path/to/file is the path to the Elixir file you want to run.

Example output:

Hello, World!

Use case 2: Evaluate Elixir code by passing it as an argument

Code:

elixir -e "code"

Motivation: Evaluating Elixir code directly from the command line can be useful for doing quick calculations, testing small code snippets, or experimenting with the Elixir language features.

Explanation:

• elixir is the command to invoke the Elixir interpreter.
• -e "code" is an option followed by the Elixir code you want to evaluate. The code should be enclosed in double quotes.

Example output:

42

Conclusion:

The ’elixir’ command provides a convenient way to execute Elixir code without the need for compilation. By using the ’elixir’ command, you can easily run Elixir files or evaluate Elixir code directly from the command line, making it a versatile tool for Elixir developers.