positional parameters

In Bash scripting, positional parameters like ``, ``, etc., store input arguments. For accessing the tenth and subsequent parameters, curly braces are used (e.g., ``, ``) to prevent misinterpretation as `0`. This method is necessary for scripts that handle extensive inputs, ensuring parameters are referenced correctly and script functionality is optimized.

The article details the use of the Internal Field Separator (IFS) in Bash to customize the expansion of positional parameters (`$@`) with different separators, illustrating its utility in formatting script outputs for paths or CSV files. By setting `IFS` to a delimiter like commas or colons and employing `"$*"`, scripters can efficiently join arguments, enhancing script flexibility.