Walter Bright wrote:
A simple command line spell checker would be a cool demonstration of this!
$ man bash /cdspell If set, minor errors in the spelling of a directory com- ponent in a cd command will be corrected. The errors checked for are transposed characters, a missing charac- ter, and one character too many. If a correction is found, the corrected file name is printed, and the com- mand proceeds. This option is only used by interactive shells.