Filename Substitution
File name substitution is a feature which allows special characters and patterns to substituted with file names in the current directory, or arguments to the case and [[...]] commands.
Pattern-Matching Characters/Patterns
| ? | match any single character |
| * | match zero or more characters, including null |
| [abc] | match any characters between the brackets |
| [x–z] | match any characters in the range x to z |
| [a–ce–g] | match any characters in the range a to c, e to g |
| [!abc] | match any characters not between the brackets |
| [!x–z] | match any characters not in the range x to z |
| . | strings starting with '.' must be explicitly matched |
| ?(pattern-list) | match zero or one occurrence of any pattern |
| *(pattern-list) | match zero or more occurrences of any pattern |
| +(pattern-list) | match one or more occurrence of any pattern |
| @(pattern-list) | match exactly one occurrence of any pattern |
| !(pattern-list) | match anything except any pattern |
| pattern-list | multiple patterns must be separated with a '|' character |
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