A script or scripting language is a computer language with a series of commands within a file capable of being executed and does not need to be compiled. Good examples of scripting languages include Shell Script, Java script And VB script.

Advantages of a scripts
Open source, allowing users to view and edit the script if needed.
Does not require the file to be compiled, but may be able to be if needed.
Easy to learn and write. Of course, this all depends upon the user’s perspective and the actual language.
Easy to port between different operating systems.
Much faster to develop than an actual program. Some individuals and companies write scripts as a prototype for actual programs.

Disadvantages of scripts
Open source, allows others to view source code, which may be prohibited by some companies.
In some situations, may be slower than a compiled program.
Requires the user to install an interpreter or separate program before the script can be run.