A computer script is exactly the same as the source code of programs, but with one important exception. Application source code is generally compiled before it is executed; a script, however, does not need to be compiled, and can be directly executed by the scripting engine.

There are many scripts like PHP, ASP, JSP, DOS, VBScript, AppleScript, and so on. Each script has a corresponding scripting engine capable of reading and executing the instructions in the script. See also Batch file.

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