Programming FlashCards - Learn Coding Concepts

Until Loop with Input

This example demonstrates using an 'until' loop to repeatedly prompt for user input until a valid response is received. It's useful for ensuring that the program continues to ask until the correct input is provided.

Shell

Until Loop

An 'until' loop in Shell scripting executes a block of code until a specified condition becomes true. It's useful for looping until a desired state is reached, providing a clear exit condition.

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Quoting Mechanisms

In Shell scripting, quoting is essential for controlling how the shell interprets characters. Use single quotes to preserve the literal value of each character, double quotes to allow variable expansion, and backslashes to escape special characters.

Shell

Quoting in Shell

Quoting in shell scripting is crucial for managing how the shell interprets special characters. Use single quotes to preserve literal values and double quotes to allow variable expansion. This helps avoid syntax errors and ensures your commands execute as intended.

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Array Initialization

In Shell scripting, arrays can be initialized using parentheses. This example shows how to create an array and access its elements.

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Array Basics

Learn how to create and manipulate arrays in Shell scripting. Arrays allow you to store multiple values in a single variable, making data management easier.