[PDF] UNIT-1 INTRODUCTION TO SCRIPTING LANGUAGES

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UNIT-1

INTRODUCTION TO SCRIPTING LANGUAGES

1.1 Scripts and programs:

Scripting is the action of writing scripts using a scripting language, distinguishing neatly between programs, which are written in conventional programming language such as C,C++,java, and scripts, which are written using a different kind of language. We could reasonably argue that the use of scripting languages is just another kind of programming. Scripting languages are used for is qualitatively different from conventional programming languages like C++ and Ada address the problem of developing large applications from the ground up, employing a team of professional programmers, starting from well-defined specifications, and meeting specified performance constraints. Scripting languages, on other hand, address different problems: Controlling applications that have a programmable interface Writing programs where speed of development is more important than run-time efficiency. The most important difference is that scripting languages incorporate features that enhance the productivity of the user in one way or another, making them accessible to people who would not normally describe themselves as programmers, their primary employment being in some other capacity. Scripting languages make programmers of us all, to some extent.

1.2 Origin of scripting:

commands that were to be read from a file and follow in sequence as if they had been typed in file that was intended to be executed directly rather than being compiled to a different form of file prior to execution. system, use of a dial-up connection to a remote system required a communication package that used proprietary language to write scripts to automate the sequence of operations required to establish a connection to a remote system. Note that if we regard a scripts as a sequence of commands to control an application or However, scripts only become interesting when they have the added value that comes from using programming concepts such as loops and branches.

1.3 Scripting today:

SCRIPTING IS USED WITH 3 DIFFRENT MEANINGS:

1. A new style of programming which allows applications to be developed much faster than

traditional methods allow,and maks it possible for applications to evolve rapidly to meet changing user requirements.This style of programming frequently uses a scripting language to

[PDF] [PDF] UNIT-1 INTRODUCTION TO SCRIPTING LANGUAGES - JBIET