Square brackets are used to match a single character in a string to a list of available characters. For instance the command ls j[oae]n would find jan, jen, and jon but not joan (because it has four characters). It is not necessary for the characters inside the brackets to be in any particular order (e.g., [pch] is the same as [chp]) and you can use alphabetic or numeric characters for the search pattern.

Examples

This example will show any files or directories that start with any of the characters between b and f and have any number of characters after: