Control Instructions are the ones, which enable us to specify the order in which the VARIOUS instructions in a program/script are to be executed by the COMPUTER. Basically, they determine a flow of control in a program.

There are 4 types of control instructions that are available in a shell:

Sequence Control Instruction – This ensures that the instructions are executed in the same order in which they appear in the program.

Selection or Decision Control Instruction – It allows the computer to take a decision as to which instruction is to be executed next.

Repetition or Loop Control Instruction – It HELPS a computer to execute a group of statements repeatedly.

Case-Control Instruction – This is USED when we need to SELECT from several alternatives.

Control Instructions are the ones, which enable us to specify the order in which the various instructions in a program/script are to be executed by the computer. Basically, they determine a flow of control in a program.

There are 4 types of control instructions that are available in a shell:

Sequence Control Instruction – This ensures that the instructions are executed in the same order in which they appear in the program.

Selection or Decision Control Instruction – It allows the computer to take a decision as to which instruction is to be executed next.

Repetition or Loop Control Instruction – It helps a computer to execute a group of statements repeatedly.

Case-Control Instruction – This is used when we need to select from several alternatives.