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→Filename Expansion
As shown in the diagram on the right, when the ls command is issued with a filename expansion symbol (like *), the Bash shell searches for files that match the symbol (in this case all filenames that end with the extension ".txt") and expands the argument using the wildcards with <br>those filenames as separate arguments. You do not see this happen in the shell, <br>it is a process that occurs "behind the scenes".
Below are the most common Filename Expansion symbols and how they are used for filename expansion:
