How does the shell interpret metacharacter?

In a shell, metacharacters are special characters that have specific meanings and functions beyond their literal values. They are used for various purposes, such as file redirection (e.g., >, <), command substitution (e.g., or $()), and wildcard matching (e.g., *, ?). When the shell encounters a metacharacter in a command line, it interprets it according to its predefined rules, allowing users to manipulate files, control processes, and execute commands more efficiently. Properly escaping or quoting metacharacters can prevent the shell from interpreting them, treating them instead as regular characters.