Words beginning with...
Words ending with...
Words containing...
These three functions do what one would expect.
NOTE: they all return words containing at least one letter besides the pattern entered. A two-letter pattern will return words of at least three letters (four letters in the case of "Words containing").
See also Multiple Characters and Ranges.
WordFinder Software
The software that drives the WordFinder is a collection of Unix
shell scripts. Most of these scripts are available in my book,
Shell
Scripting Recipes: A Problem-Solution Approach (Apress, May
2005). You can run these scripts on any version of Unix, including
Linux, Solaris, and the various BSD implementations. They have not
been tested on Mac OS/X, but they should work there, too. (If you
try them, please let me know how they run.)