What Does It Mean to Call a Script from Another Script?

In programming, it is common to call a script from another script to modularize code, reuse functionality, or streamline processes. This practice is prevalent in various scripting languages such as Shell, Python, and JavaScript. Calling a script from another script involves executing one script within another script or program, leveraging the called script's functionality.

Why Call a Script from Another Script?

There are several reasons and benefits to calling a script from another script, which include but are not limited to:

• Modularity: Breaking down a complex process into smaller, manageable pieces.
• Reusability: Reducing redundancy by reusing code across multiple scripts.
• Maintainability: Making it easier to manage and understand by compartmentalizing functions.
• Separation of Concerns: Keeping functionality independent and focused on a single task.

Methodology

The approach to call a script from another script varies depending on the language in use. Here are some common methods employed in various programming environments:

Shell Scripts

In Unix-like operating systems, shell scripts are often used to call other shell scripts. This can be done using `source`, `.`, or by simply calling the script via its path.

• Using Import:
• Using exec():
• Using require:
• Using import (ES6):