Control instructions are commands that allow you to specify how the different instructions in a script should be executed. Thus, their primary purpose is to determine the flow of control in a Shell program.
A Shell has four types of control instructions:
> Sequence control instruction enforces the instructions to be executed in the same order in which they are in the program.
> Selection/decision control instruction that enables the computer to determine which instruction should be executed next.
> Repetition/loop control instruction that allows the computer to run a group of statements repetitively.
Case-control instruction is used when you need to choose from a range of alternatives.
Posted Date:- 2021-09-10 09:35:56
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