Description: A ‘While’ loop is a fundamental control structure in programming languages, including various shell environments. Its main function is to repeatedly execute a block of code as long as a specific condition remains true. This feature allows programmers to automate tasks and perform repetitive operations without the need to write the same code multiple times. The basic syntax of a ‘While’ loop includes the keyword ‘while’, followed by the condition being evaluated. If the condition is true, the code inside the loop executes; if false, the loop stops. This structure is particularly useful in situations where the number of iterations is not known in advance, such as reading data until a specific end is reached or waiting for a user response. Additionally, ‘While’ loops can be nested, allowing for the creation of more complex structures and performing operations at multiple levels. In summary, the ‘While’ loop is a powerful tool that facilitates efficient programming and task automation in various programming environments.
