Shell Pattern Matching

Special characters in shell pattern matching

*	Matches any string (including an empty string).
?	matches any single character .
[...]	Matches any character that is contained.

Precautions:

' * ' uses ' * * ' in the file name extension to match all files and 0 or more subdirectories. If you add '/' to the end of the pattern, only the matching directory and subdirectories do not match the file.

[...] If a pair of characters is separated by a hyphen (-) then a range is represented. If the first character in [] is '! ' or ' ^ ' then the [] pattern will become mismatched any characters contained.

For example: [A-dx-z] is equivalent to [ABCDXYZ]

Extglob Options Open

The following pattern matching is supported if the EXTGLOB option ( Shell built-in command shopt extglob option ) is turned on in the shell.

Multiple parameters can use the ' | ' To split.

Shell Pattern Matching