A script file on a computer is a document that contains instructions written in programming codes and is a programming language that performs various functions within a computer program.
What is a Script in Programming?
Scripts are always program scripts that can be interpreted, but not every program that is interpreted is considered a script.
With scripts, various functions can be provided for users such as running various interaction files, performing various tasks in a shorter time in operating systems. Shells are also used as interpreters of such programs since they have various functions.
Usually, in operating systems, a script is created with one of the headers such as #!/bin/bash or #!/usr/bin/python, known as shebang in the file content.
Most systems may not need different extensions to execute this script, but it can often be useful to define them via a command-line interface without the user having to open these files.
Scripts are a step ahead as a tool for more advanced instructions when compared to application programs, because applications are programs that are built only for a specific task, cannot be edited by the user, and can only be modified by their manufacturer.
In Windows operating systems, the use of scripts is carried out in a DOS environment, that is, with command files that can be interpreted by cmd.exe or command.com, and these files are called BATCH and the file extension ends with.
Scripts used in web design are used in the HTML document, and the defined script is run only once when the user visits the website and the HTML document is downloaded by the web browser. When the user cannot run the commands defined on the web page, files with the NoScript element are executed.
On the server-side, it is not guaranteed whether these scripts can be run by the client. However, they allow changing HTTP headers and access databases and other internal files.