loop in unix / linux Tags- TipsMake

Loop in Unix / Linux a loop is a program that has powerful features, allowing you to repeat a set of commands. in this chapter, you will learn through practical examples of loops contained in shell programs.

The while loop in Shell the while loop gives you the ability to execute a set of repetitive commands until certain conditions occur. it is often used when you need to manipulate iterative variable values.

For loop in Shell the for loop works on lists of items (items). it repeats a set of commands for each item in a list.

Until loop in Shell the while loop is perfect for the situation where you want to execute a set of commands while some conditions are true. sometimes you need to execute a set of commands until a condition is true, then you need to use a until loop.

Select loop in Shell the select loop provides an easy way to create a numbered menu from which the user can select. it is useful when you want to ask the user to select one or more items from a list of options.