Which of the following commands let us perform a set of instructions repeatedly?(a) for(b) while(c) until(d) for, while, untilThe question was asked in an interview for internship.Asked question is from Shell Programming using Various Commands in portion Essential Shell Programming of Unix

Which of the following commands let us perform a set of instructions r

1.	Which of the following commands let us perform a set of instructions repeatedly?(a) for(b) while(c) until(d) for, while, untilThe question was asked in an interview for internship.Asked question is from Shell Programming using Various Commands in portion Essential Shell Programming of Unix
Answer» The correct choice is (d) for, while, until To ELABORATE: For REPEATEDLY performing a set of instructions, we have to use loops. Shell features THREE TYPES of loops —while, for and until. All of them repeat the INSTRUCTION set enclosed by certain keywords.

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Which of the following commands let us perform a set of instructions repeatedly?(a) for(b) while(c) until(d) for, while, untilThe question was asked in an interview for internship.Asked question is from Shell Programming using Various Commands in portion Essential Shell Programming of Unix

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