UNIX LOOPING CONTROL STATEMENTS

 1.A LOOP INVOLVES REPEATING SOME PORTION OF THE PROGRAM EITHER A SPECIFIED NO OF TIMES OR UNTIL A PARTICULAR CONDITION IS BEING SATISFIED .THERE ARE THREE METHODS BY WAY OF WHICH WE CAN REPEAT A PART OF A PROGRAM.THERE ARE

1.USING  A WHILE STSTEMENT

2.USING A UNITL STATEMENT

3.USING A FOR STATEMENT

1.WHILE STSTEMENT

SYNTAX:

WHILE[CONDITION]

DO

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DONE

THE STATEMENTS WITHIN THE WHILE LOOP WOULD KEEP ON GETTING EXECUTED TILL THE CONDITION IS TRUE.WHEN THE CONDITION IS FALSE,THE CONTROL TRANSFER TO AFTER DONE STATEMENT.