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To port, in the context of "porting an application," refers to changing software programming to allow the program to run with a different operating system than the program for which it was designed.
Also, sometimes simply port or ported is used when referencing hardware that has been changed to operate with a different OS o.
This term is also known, or referred to, as porting the application.
To port an application means to allow an application program to run on a different OS. Machine dependent sections of the program must be rewritten as these are sections of the program that will execute only on a certain type of computer. Programs designed to run on a variety of types of computers, using different OSs, are said to be machine-independent.
Programs easily ported are said to be portable; or stated differently, when the manpower cost of porting to a new OS is less than that required to rewrite the entire program (i.e. from scratch), the program is described as portable.