http://www.fmi.uni-passau.de/archive/doc/unix/unixhelp/Unixhelp/concepts_regexp1.html (Einblicke ins Internet, 10/1995)You can use the following metacharacters within any shell to create regular expressions that match file names.
? matches any single character * matches any number of any characters [nnn] matches any of the enclosed characters [!nnn] match any character that is not enclosed
[n-n] matches any character in this range